Optical image capturing system

ABSTRACT

An optical image capturing system is provided. In order from an object side to an image side, the optical image capturing system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. At least one lens among the first lens to the fifth lens has positive refractive power. The sixth lens may have negative refractive power and an object side and an image side thereof are aspherical wherein at least one surface of the sixth lens has an inflection point. The optical image capturing system has six lenses with refractive power. When meeting some certain conditions, the optical image capturing system may have outstanding light-gathering ability and an adjustment ability about the optical path in order to elevate the image quality.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority from Taiwan Patent Application No.107117423, filed on May 22, 2018, in the Taiwan Intellectual PropertyOffice, the content of which is hereby incorporated by reference in itsentirety for all purposes.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present disclosure relates to an optical image capturing system, andmore particularly is about a compact optical image capturing systemwhich can be applied to electronic products.

2. Description of the Related Art

In recent years, with the rise of portable electronic devices havingcamera functionalities, the demand for an optical image capturing systemhas gradually been raised. The image sensing device of the ordinaryphotographing camera is commonly selected from a charge coupled device(CCD) or a complementary metal-oxide semiconductor sensor (CMOS Sensor).Also, as advanced semiconductor manufacturing technology enables theminimization of the pixel size of the image sensing device, thedevelopment of the optical image capturing system has gravitated towardsthe field of high pixels. Therefore, the requirement for high imagingquality has been rapidly increasing.

The traditional optical image capturing system of a portable electronicdevice comes with different designs, including a four-lens or afifth-lens design. However, since the pixel density has continuouslyincreased, more end-users are demanding a large aperture for suchfunctionalities as micro filming and night view. The optical imagecapturing system of prior art cannot meet these high requirements andrequire a higher order camera lens module.

Therefore, how to effectively increase quantity of incoming light of theoptical lenses, and further improve image quality for the imageformation, has become an important issue.

SUMMARY OF THE INVENTION

The aspect of embodiment of the present invention directs to an opticalimage capturing system which is able to use combination of refractivepower, convex and concave surfaces of six optical lenses (the convex orconcave surface in the disclosure is the change of geometric shape of anobject side or an image side of each lens at different heights from anoptical axis in principle) to increase the amount of light admitted intothe optical image capturing system and to improve imaging quality, sothat the optical image capturing system can be applied to the minimizedelectronic products.

Furthermore, in certain applications of optical imaging, there will be aneed to conduct the image formation for the light of the visiblewavelength and the infrared wavelength, for example, an IP videosurveillance camera. The IP video surveillance camera is equipped withthe Day & Night function. The main reason is that the visible lightspectrum for human vision is in the wavelength range from 400 to 700 nm,but the image formed on the camera sensor includes infrared light, whichis invisible to the human eye. Therefore, based on the circumstances, anIR cut filter removable (ICR) is placed in front of the camera lens ofthe IP video surveillance camera in order to increase the “fidelity” ofthe image, which can not only prevent infrared light and color shift inthe daytime, but also allow the infrared light incident on the cameralens at night to elevate luminance. Nevertheless, the elements of theICR occupy a significant amount of space and are expensive, whichimpedes the design and manufacture of miniaturized surveillance camerasin the future.

One aspect of embodiment of the present invention directs to an opticalimage capturing system, which is able to utilize the combination ofrefractive power, convex surfaces and concave surfaces of six lenses, aswell as the selection of materials thereof, to reduce the differencebetween the image focal length of visible light and image focal lengthof infrared light, that is, to achieve a near “confocal” effect withoutthe ICR.

The terms and the definition for the lens parameters in the embodimentof the present invention are shown as below for further reference.

The Lens Parameters Related to the Magnification of the Optical ImageCapturing System

The optical image capturing system may be designed for the applicationof the biometric characteristics identification, for example, facialrecognition. When the embodiment of the present invention is configuredto capture an image for facial recognition, infrared light may beselected as the operational wavelength. At the same time, for a face ofabout 15 centimeters (cm) wide at a distance of 25-30 cm, at least 30horizontal pixels can be formed in the horizontal direction of anphotosensitive element (pixel size of 1.4 micrometers (μm)). The linearmagnification of the image plane for infrared light is LM, which meetsthe following conditions: LM=(30 horizontal pixels)*(1.4 μm pixelsize)/(15 cm, width of the photographed object); LM≥0.0003. When thevisible light is adopted as the operation wavelength, for a face ofabout 15 cm wide at a distance of 25-30 cm, at least 50 horizontalpixels can be formed in the horizontal direction of a photosensitiveelement (pixel size of 1.4 micrometers (μm)).

The Lens Parameters Related to a Length or a Height

For visible light spectrum, the present invention may select thewavelength of 555 nm as the primary reference wavelength and the basisfor the measurement of focus shift. For infrared spectrum (700 nm-1300nm), the present invention may select the wavelength of 850 nm as theprimary reference wavelength and the basis for the measurement of focusshift.

The optical image capturing system may have a first image plane and asecond image plane. The first image plane which is perpendicular to theoptical axis is an image plane specifically for the visible light, andthe through focus modulation transfer rate (value of MTF) at the firstspatial frequency has a maximum value at the central field of view ofthe first image plane; and the second image plane which is perpendicularto the optical axis is an image plane specifically for the infraredlight, and the through focus modulation transfer rate (value of MTF) atthe first spatial frequency has a maximum value at the central field ofview of the second image plane. The optical image capturing system mayfurther have a first average image plane and a second average imageplane. The first average image plane which is perpendicular to theoptical axis is an image plane specifically for the visible light. Andthe first average image plane may be disposed at the average position ofthe defocusing positions, where the values of MTF of the visible lightat central field of view, 0.3 field of view, and 0.7 field of view areat their respective maximum at the first spatial frequency. The secondaverage image plane which is perpendicular to the optical axis is animage plane specifically for the infrared light. The second averageimage plane is disposed at the average position of the defocusingpositions, where the values of MTF of the infrared light at centralfield of view, 0.3 field of view, and 0.7 field of view are at theirrespective maximum at the first spatial frequency.

The aforementioned the first spatial frequency is set to be a halfspatial frequency (half frequency) of a photosensitive element (sensor)used in the present invention. For example, the photosensitive elementhaving the pixel size of 1.12 μm or less, of which the quarter spatialfrequency, half spatial frequency (half frequency) and full spatialfrequency (full frequency) in the characteristic diagram of modulationtransfer function are respectively at least 110 cycles/mm, 220 cycles/mmand 440 cycles/mm. Rays from any field of view can be further dividedinto sagittal rays and tangential rays.

The focus shifts, where the through focus MTF values of the visiblesagittal ray at the central field of view, 0.3 field of view, and 0.7field of view of the optical image capturing system, are at theirrespective maxima, are respectively expressed as VSFS0, VSFS3, and VSFS7(unit of measurement: mm). The maximum values of the through focus MTFof the visible tangential ray at the central field of view, 0.3 field ofview, and 0.7 field of view of the optical image capturing system may berespectively expressed as VTMTF0, VTMTF3, and VTMTF7 (unit ofmeasurement: mm). The average focus shift (position) of both theaforementioned focus shifts of the visible sagittal ray at three fieldsof view and focus shifts of the visible tangential ray at three fieldsof view may be expressed as AVFS (unit of measurement: mm), which meetsthe absolute value |(VSFS0+VSFS3+VSFS7+VTFS0+VTFS3+VTFS7)/6|.

The focus shifts, where the through focus MTF values of the infraredsagittal ray at the central field of view, 0.3 field of view, and 0.7field of view of the optical image capturing system are at theirrespective maxima, may be respectively expressed as ISFS0, ISFS3, andISFS7 (unit of measurement: mm). The average focus shift (position) ofthe aforementioned focus shifts of the infrared sagittal ray at threefields of view may be expressed as AISFS (unit of measurement: mm). Themaximum values of the through focus MTF of the infrared sagittal ray atthe central field of view, 0.3 field of view, and 0.7 field of view ofthe optical image capturing system may be respectively expressed asISMTF0, ISMTF3, and ISMTF7. The focus shifts, where the through focusMTF values of the infrared tangential ray at the central field of view,0.3 field of view, and 0.7 field of view of the optical image capturingsystem are at their respective maxima, may be respectively expressed asITFS0, ITFS3, and ITFS7 (unit of measurement: mm). The average focusshift (position) of the aforementioned focus shifts of the infraredtangential ray at three fields of view may be expressed as AITFS (unitof measurement: mm). The maximum values of the through focus MTF of theinfrared tangential ray at the central field of view, 0.3 field of view,and 0.7 field of view of the optical image capturing system may berespectively expressed as ITMTF0, ITMTF3, and ITMTF7. The average focusshift (position) of both of the aforementioned focus shifts of theinfrared sagittal ray at the three fields of view and focus shifts ofthe infrared tangential ray at the three fields of view may be expressedas AIFS (unit of measurement: mm), which meets the absolute value of|(ISFS0+ISFS3+ISFS7+ITFS0+ITFS3+ITFS7)/6|.

The focus shift between the focal points of the visible light and thefocal points of the infrared light at their central fields of view(RGB/IR) of the entire optical image capturing system (i.e. wavelengthof 850 nm versus wavelength of 555 nm, unit of measurement: mm) may beexpressed as FS, which meets the absolute value|(VSFS0+VTFS0)/2−(ISFS0+ITFS0)/2|. The difference (focus shift) betweenthe average focus shift of the visible light at the three fields of viewand the average focus shift of the infrared light at the three fields ofview (RGB/IR) of the entire optical image capturing system may beexpressed as AFS (i.e. wavelength of 850 nm versus wavelength of 555 nm,unit of measurement: mm), which meets the absolute value of |AIFS−AVFS|.

The maximum image height of the optical image capturing system may beexpressed as HOI. The height of the optical image capturing system maybe expressed as HOS. The distance from the object side of the first lensto the image side of the sixth lens of the optical image capturingsystem may be expressed as InTL. The distance from a fixed aperture(stop) of the optical image capturing system to the first image plane ofthe optical image capturing system may be expressed as InS. The distancefrom the first lens to the second lens of the optical image capturingsystem may be expressed as In12 (example). The thickness of the firstlens of the optical image capturing system on the optical axis may beexpressed as TP1 (example).

The Lens Parameters Related to the Material

A coefficient of dispersion of the first lens in the optical imagecapturing system may be expressed as NA1 (example); a refractive indexof the first lens may be expressed as Nd1 (example).

The Lens Parameters Related to the Angle of View

An angle of view may be expressed as AF. A half angle of view may beexpressed as HAF. An angle of a chief ray may be expressed as MRA.

The Lens Parameters Related to Exit/Entrance Pupil

An entrance pupil diameter of the optical image capturing system may beexpressed as HEP. The maximum effective half diameter (EHD) of anysurface of a single lens refers to a perpendicular height between theoptical axis and an intersection point, where the incident ray at themaximum angle of view passing through the most marginal entrance pupilintersects with the surface of the lens. For example, the maximumeffective half diameter of the object side of the first lens may beexpressed as EHD11. The maximum effective half diameter of the imageside of the first lens may be expressed as EHD12. The maximum effectivehalf diameter of the object side of the second lens may be expressed asEHD21. The maximum effective half diameter of the image side of thesecond lens may be expressed as EHD22. The maximum effective halfdiameters of any surfaces of other lens in the optical image capturingsystem are expressed in the similar way.

The Lens Parameters Related to the Surface Depth of the Lens

The distance parallel to the optical axis, which is measured from theintersection point where the object side of the sixth lens crosses theoptical axis to the terminal point of the maximum effective halfdiameter on the object side of the sixth lens, may be expressed asInRS61 (depth of the EHD). The distance parallel to the optical axis,which is measured from the intersection point where the image side ofthe sixth lens crosses the optical axis to the terminal point of themaximum effective half diameter on the image side of the sixth lens, maybe expressed as InRS62 (depth of the EHD). The depths of the EHD(sinkage values) on the object side or the image side of other lens areexpressed in similar way.

The Lens Parameters Related to the Shape of the Lens

The critical point C is a point which is tangential to the tangentialplane and perpendicular to the optical axis on the specific surface ofthe lens except that an intersection point which crosses the opticalaxis on the specific surface of the lens. In addition to the descriptionabove, the perpendicular distance between the critical point C51 on theobject side of the fifth lens and the optical axis may be expressed asHVT51 (example). The perpendicular distance between a critical point C52on the image side of the fifth lens and the optical axis may beexpressed as HVT52 (example). The perpendicular distance between thecritical point C61 on the object side of the sixth lens and the opticalaxis may be expressed as HVT61 (example). The perpendicular distancebetween a critical point C62 on the image side of the sixth lens and theoptical axis may be expressed as HVT62 (example). The perpendiculardistances between the critical point on the image side or the objectside of other lens and the optical axis are expressed in similar way.

The inflection point on the object side of the sixth lens that is thefirst nearest to the optical axis may be expressed as IF611, and thesinkage value of that inflection point IF611 may be expressed as SGI611(example). That is, the sinkage value SGI611 is a horizontal distanceparallel to the optical axis, which is measured from the intersectionpoint where the object side of the sixth lens crosses the optical axisto the inflection point the first nearest to the optical axis on theobject side of the sixth lens. The perpendicular distance between theinflection point IF611 and the optical axis may be expressed as HIF611(example). The inflection point on the image side of the sixth lens thatis the first nearest to the optical axis may be expressed as IF621, andthe sinkage value of that inflection point IF621 may be expressed asSGI621 (example). That is, the sinkage value SGI621 is a horizontaldistance parallel to the optical axis, which is measured from theintersection point where the image side of the sixth lens crosses theoptical axis to the inflection point on the image side of the sixth lensthat is the first nearest to the optical axis. The perpendiculardistance between the inflection point IF621 and the optical axis may beexpressed HIF621 (example).

The inflection point on the object side of the sixth lens that is thesecond nearest to the optical axis may be expressed as IF612, and thesinkage value of that inflection point IF612 may be expressed as SGI612(example). That is, the sinkage value SGI612 is a horizontal distanceparallel to the optical axis, which is measured from the intersectionpoint where the object side of the sixth lens crosses the optical axisto the inflection point the second nearest to the optical axis on theobject side of the sixth lens. The perpendicular distance between theinflection point IF612 and the optical axis may be expressed as HIF612(example). The inflection point on the image side of the sixth lens thatis the second nearest to the optical axis may be expressed as IF622, andthe sinkage value of that inflection point IF622 may be expressed asSGI622 (example). That is, the sinkage value SGI622 is a horizontaldistance parallel to the optical axis, which is measured from theintersection point where the image side of the sixth lens crosses theoptical axis to the inflection point second nearest to the optical axison the image side of the sixth lens. The perpendicular distance betweenthe inflection point IF622 and the optical axis may be expressed asHIF622 (example).

The inflection point on the object side of the sixth lens that is thethird nearest to the optical axis may be expressed as IF613, and thesinkage value of that inflection point IF613 may be expressed as SGI613(example). The sinkage value SGI613 is a horizontal distance parallel tothe optical axis, which is measured from the intersection point wherethe object side of the sixth lens crosses the optical axis to theinflection point the third nearest to the optical axis on the objectside of the sixth lens. The perpendicular distance between theinflection point IF613 and the optical axis may be expressed as HIF613(example). The inflection point on the image side of the sixth lens thatis the third nearest to the optical axis may be expressed as IF623, andthe sinkage value of that inflection point IF623 may be expressed asSGI623 (example). That is, the sinkage value SGI623 is a horizontaldistance parallel to the optical axis, which is measured from theintersection point where the image side of the sixth lens crosses theoptical axis to the inflection point the third nearest to the opticalaxis on the image side of the sixth lens. The perpendicular distancebetween the inflection point IF623 and the optical axis may be expressedas HIF623 (example).

The inflection point on the object side of the sixth lens that is thefourth nearest to the optical axis may be expressed as IF614, and thesinkage value of the inflection point IF614 may be expressed as SGI614(example). That is, the sinkage value SGI614 is a horizontal distanceparallel to the optical axis, which is measured from the intersectionpoint where the object side of the sixth lens crosses the optical axisto the inflection point the fourth nearest to the optical axis on theobject side of the sixth lens. The perpendicular distance between theinflection point IF614 and the optical axis may be expressed as HIF614(example). The inflection point on the image side of the sixth lens thatis the fourth nearest to the optical axis may be expressed as IF624, andthe sinkage value of that inflection point IF624 may be expressed asSGI624 (example). That is, the sinkage value SGI624 is a horizontaldistance parallel to the optical axis, which is measured from theintersection point where the image side of the sixth lens crosses theoptical axis to the inflection point the fourth nearest to the opticalaxis on the image side of the sixth lens. The perpendicular distancebetween the inflection point IF624 and the optical axis may be expressedas HIF624 (example).

The inflection points on the object side or the image side of the otherlens and the perpendicular distances between them and the optical axis,or the sinkage values thereof are expressed in the similar way describedabove. The inflection point, the distance perpendicular to the opticalaxis between the inflection point and the optical axis, and the sinkagevalue thereof on the object-side surface or image-side surface of otherlenses are denoted in the same manner.

The Lens Parameters Related to the Aberration

Optical distortion for image formation in the optical image capturingsystem may be expressed as ODT. TV distortion for image formation in theoptical image capturing system may be expressed as TDT. Furthermore, thedegree of aberration offset within a range of 50% to 100% of the fieldof view of the image can be further illustrated. The offset of thespherical aberration may be expressed as DFS. The offset of the comaaberration may be expressed as DFC.

The characteristic diagram of modulation transfer function of theoptical image capturing system is used for testing and evaluating thecontrast ratio and the sharpness ratio of the image. The verticalcoordinate axis of the characteristic diagram of modulation transferfunction indicates a contrast transfer rate (with values from 0 to 1).The horizontal coordinate axis indicates a spatial frequency (cycles/mm;lp/mm; line pairs per mm). Theoretically, an ideal image capturingsystem can clearly and distinctly show the line contrast of aphotographed object. However, the values of the contrast transfer rateat the vertical coordinate axis are smaller than 1 in the actual opticalimage capturing system. In addition, it is generally more difficult toachieve a fine degree of recovery in the edge region of the image thanin the central region of the image. The contrast transfer rates (MTFvalues) with spatial frequencies of 55 cycles/mm at the optical axis,0.3 field of view and 0.7 field of view of visible light spectrum on thefirst image plane may be expressed as MTFE0, MTFE3 and MTFE7,respectively. The contrast transfer rates (MTF values) with spatialfrequencies of 110 cycles/mm at the optical axis, 0.3 field of view and0.7 field of view of visible light spectrum on the first image plane maybe respectively expressed as MTFQ0, MTFQ3 and MTFQ7. The contrasttransfer rates (MTF values) with spatial frequencies of 220 cycles/mm atthe optical axis, 0.3 field of view and 0.7 field of view of visiblelight spectrum on the first image plane may be respectively expressed asMTFH0, MTFH3 and MTFH7. The contrast transfer rates (MTF values) withspatial frequencies of 440 cycles/mm at the optical axis, 0.3 field ofview, and 0.7 field of view of visible light spectrum on the first imageplane may be respectively expressed as MTF0, MTF3 and MTF7. The threefields of view described above are representative to the center, theinternal field of view and the external field of view of the lens.Therefore, the three fields of view described above may be used toevaluate whether the performance of the specific optical image capturingsystem is excellent. If the design of the optical image capturing systemcorresponds to a sensing device which pixel size is below and equal to1.12 micrometers, the quarter spatial frequencies, the half spatialfrequencies (half frequencies) and the full spatial frequencies (fullfrequencies) of the characteristic diagram of modulation transferfunction are respectively at least 110 cycles/mm, 220 cycles/mm and 440cycles/mm.

If an optical image capturing system needs to satisfy conditions withimages of the infrared spectrum and the visible spectrum simultaneously,such as the requirements for night vision in low light, the usedwavelength may be 850 nm or 800 nm. Because the main function is torecognize the shape of an object formed in a black-and-whiteenvironment, high resolution is unnecessary and thus the spatialfrequency which is less than 110 cycles/mm may be selected to evaluatethe performance of the specific optical image capturing system on theinfrared light spectrum. When the foregoing wavelength 850 nm focuses onthe first image plane, the contrast transfer rates (MTF values) with aspatial frequency of 55 cycles/mm where the images are at the opticalaxis, 0.3 field of view and 0.7 field of view may be respectivelyexpressed as MTFI0, MTFI3 and MTFI7. However, because the differencebetween the infrared wavelength of 850 nm or 800 nm and the generalvisible light wavelength is large, the optical image capturing systemwhich not only has to focus on the visible light and the infrared light(dual-mode) but also has to achieve a certain function in the visiblelight and the infrared light respectively has a significant difficultyin design.

The invention provides an optical image capturing system, which iscapable of focusing visible light and infrared light (dual-mode)simultaneously and achieving certain functions individually. An objectside or an image side of the sixth lens may have inflection points, suchthat the incident angle from each field of view to the sixth lens can beadjusted effectively and the optical distortion and the TV distortionare amended as well. Furthermore, the surfaces of the sixth lens may beendowed with better capability to adjust the optical path in order toelevate the image quality.

The invention provides an optical image capturing system, in the orderfrom an object side to an image side including a first lens, a secondlens, a third lens and a fourth lens, a fifth lens, a sixth lens, afirst image plane, and a second image plane. The first image plane is animage plane specifically for visible light and perpendicular to theoptical axis, and a through focus modulation transfer rate (MTF) ofcentral field of view of the first image plane has a maximum value at afirst spatial frequency. The second image plane is an image planespecifically for infrared light and perpendicular to the optical axis,and a through focus modulation transfer rate (MTF) of central field ofview of the second image plane has a maximum value at the first spatialfrequency. The first lens to sixth lens all have refractive power. Focallengths of the six lenses may be respectively expressed as f1, f2, f3,f4, f5 and f6. A focal length of the optical image capturing system maybe expressed as f. An entrance pupil diameter of the optical imagecapturing system may be expressed as HEP. There is a distance HOS on theoptical axis from the object side of the first lens to the first imageplane. A half maximum angle of view of the optical image capturingsystem may be expressed as HAF. The optical image capturing system has amaximum image height HOI on the first image plane that is perpendicularto the optical axis. A distance on the optical axis between the firstimage plane and the second image plane is FS. Thicknesses of the firstlens through the sixth lens at a height of ½ HEP and in parallel to theoptical axis may be respectively expressed as ETP1, ETP2, ETP3, ETP4,ETP5 and ETP6. A sum of ETP1 to ETP6 may be expressed as SETP.Thicknesses of the first lens through the sixth lens on the optical axismay be respectively expressed as TP1, TP2, TP3, TP4, TP5 and TP6. A sumof TP1 to TP6 may be expressed as STP. The optical image capturingsystem meets the following conditions: 1.0≤f/HEP≤10.0; 0 deg<HAF≤40 deg;0.2≤SETP/STP<1; |FS|≤15 μm.

Another optical image capturing system is further provided in accordancewith the present invention. In the order from an object side to an imageside, the optical image capturing system includes a first lens, a secondlens, a third lens, a fourth lens, a fifth lens, a sixth lens, a firstimage plane and a second image plane. The first image plane is an imageplane specifically for visible light and perpendicular to the opticalaxis, and a through focus modulation transfer rate (MTF) of centralfield of view of the first image plane has a maximum value at a firstspatial frequency. The second image plane is an image plane specificallyfor infrared light and perpendicular to the optical axis, and a throughfocus modulation transfer rate (MTF) of central field of view of thesecond image plane has a maximum value at the first spatial frequency.The first lens has refractive power and the object side of the firstlens near the optical axis is a convex surface. The second lens hasrefractive power. The third lens has refractive power. The fourth lenshas refractive power. The fifth lens has refractive power. The sixthlens has refractive power. The optical image capturing system has amaximum image height HOI on the first image plane. At least one lensamong the first lens to the sixth lens has positive refractive power.Focal lengths of the six lenses may be respectively expressed as f1, f2,f3, f4, f5 and f6. A focal length of the optical image capturing systemmay be expressed as f. An entrance pupil diameter of the optical imagecapturing system may be expressed as HEP. There is a distance HOS on theoptical axis from the object side of the first lens to the first imageplane. A half maximum angle of view of the optical image capturingsystem may be expressed as HAF. A distance on the optical axis betweenthe first image plane and the second image plane may be expressed as FS.The distance in parallel to the optical axis between a coordinate pointat a height of ½ HEP on the object side of the first lens and the firstimage plane may be expressed as ETL. The distance in parallel to theoptical axis between a coordinate point at a height of ½ HEP on theimage side of the sixth lens and the coordinate point at a height of ½HEP on the object side of the first lens may be expressed as EIN. Theoptical image capturing system meets the following conditions:1≤f/HEP≤10; 0 deg<HAF≤40 deg; 0.2≤EIN/ETL<1 and |FS|≤15 μm.

Yet another optical image capturing system is further provided inaccordance with the present invention. In the order from an object sideto an image side, the optical image capturing system includes a firstlens, a second lens, a third lens, a fourth lens, a fifth lens, a sixthlens, a first average image plane and a second average image plane. Thefirst average image plane is an image plane specifically for visiblelight and perpendicular to the optical axis. The first average imageplane is disposed at the average position of the defocusing positions,where through focus modulation transfer rates (values of MTF) of thevisible light at central field of view, 0.3 field of view, and 0.7 fieldof view of the optical image capturing system are at their respectivemaximum at a first spatial frequency (110 cycles/mm). The second averageimage plane is an image plane specifically for infrared light andperpendicular to the optical axis. The second average image plane isdisposed at the average position of the defocusing positions, wherethrough focus modulation transfer rates (values of MTF) of the infraredlight at central field of view, 0.3 field of view, and 0.7 field of viewof the optical image capturing system are at their respective maximum atthe first spatial frequency (110 cycles/mm). The optical image capturingsystem has six lenses with refractive power. The optical image capturingsystem has a maximum image height HOI on the first image plane. Thefirst lens has refractive power. The second lens has refractive power.The third lens has refractive power. The fourth lens has refractivepower. The fifth lens has refractive power. The sixth lens hasrefractive power. Focal lengths of the six lenses may be respectivelyexpressed as f1, f2, f3, f4, f5 and f6. A focal length of the opticalimage capturing system may be expressed as f. An entrance pupil diameterof the optical image capturing system may be expressed as HEP. There isa distance HOS on the optical axis from the object side of the firstlens to the first average image plane. A half maximum angle of view ofthe optical image capturing system may be expressed as HAF. Thicknessesof the first lens through the sixth lens at a height of ½ HEP andparallel to the optical axis may be respectively expressed as ETP1,ETP2, ETP3, ETP4, ETP5 and ETP6. A sum of ETP1 to ETP6 may be expressedas SETP. Thicknesses of the first lens through the sixth lens on theoptical axis may be respectively expressed as TP1, TP2, TP3, TP4, TP5and TP6. A sum of TP1 to TP6 may be expressed as STP. The optical imagecapturing system meets the following conditions: 1.0≤f/HEP≤10.0; 0deg<HAF≤150 deg; 0.2≤SETP/STP<1 and |AFS|≤15 μm.

The thickness of a single lens at a height of ½ entrance pupil diameter(HEP) particularly affects the corrected aberration of common area ofeach field of view of light and the capability of correcting the opticalpath difference between each field of view of light in the scope of ½entrance pupil diameter (HEP). The capability of aberration correctionis enhanced if the thickness of the lens becomes greater, but thedifficulty for manufacturing is also increased at the same time.Therefore, the thickness of a single lens at the height of ½ entrancepupil diameter (HEP) needs to be controlled, and the ratio relationship(ETP/TP) between the thickness (ETP) of the lens at a height of ½entrance pupil diameter (HEP) and the thickness (TP) of the lens on theoptical axis needs to be controlled in particular. For example, thethickness of the first lens at a height of ½ entrance pupil diameter(HEP) may be expressed as ETP. The thickness of the second lens at aheight of ½ entrance pupil diameter (HEP) may be expressed as ETP2. Thethicknesses of other lenses at a height of ½ entrance pupil diameter(HEP) in the optical image capturing system are expressed in a similarway. The sum of ETP1 to ETP6 described above may be expressed as SETP.The embodiments of the present invention may satisfy the followingrelationship: 0.3≤SETP/EIN<1.

In order to achieve a balance between enhancing the capability ofaberration correction and reducing the difficulty for manufacturing, theratio relationship (ETP/TP) between the thickness (ETP) of the lens atthe height of ½ entrance pupil diameter (HEP) and the thickness (TP) ofthe lens on the optical axis needs to be controlled in particular. Forexample, the thickness of the first lens at the height of ½ entrancepupil diameter (HEP) may be expressed as ETP1. The thickness of thefirst lens on the optical axis may be expressed as TP1. The ratiobetween ETP1 and TP1 may be expressed as ETP1/TP1. The thickness of thesecond lens at the height of ½ entrance pupil diameter (HEP) may beexpressed as ETP2. The thickness of the second lens on the optical axismay be expressed as TP2. The ratio between ETP2 and TP2 may be expressedas ETP2/TP2. The ratio relationships between the thicknesses of otherlenses at height of ½ entrance pupil diameter (HEP) and the thicknesses(TP) of the lens on the optical axis lens in the optical image capturingsystem are expressed in a similar way. The embodiments of the presentinvention may satisfy the following relationship: 0.2≤ETP/TP≤3.

The horizontal distance between two adjacent lenses at height of ½entrance pupil diameter (HEP) may be expressed as ED. The horizontaldistance (ED) described above is parallel to the optical axis of theoptical image capturing system and particularly affects the correctedaberration of common area of each field of view of light and thecapability of correcting the optical path difference between each fieldof view of light at the position of ½ entrance pupil diameter (HEP). Thecapability of aberration correction may be enhanced if the horizontaldistance becomes greater, but the difficulty for manufacturing is alsoincreased and the degree of ‘miniaturization’ to the length of theoptical image capturing system is restricted. Therefore, the horizontaldistance (ED) between two specific adjacent lens at the height of ½entrance pupil diameter (HEP) must be controlled.

In order to achieve a balance between enhancing the capability ofcorrecting aberration and reducing the difficulty for ‘minimization’ tothe length of the optical image capturing system, the ratio relationship(ED/IN) of the horizontal distance (ED) between the two adjacent lensesat height of ½ entrance pupil diameter (HEP) to the horizontal distance(IN) between the two adjacent lenses on the optical axis particularlyneeds to be controlled. For example, the horizontal distance between thefirst lens and the second lens at height of ½ entrance pupil diameter(HEP) may be expressed as ED12. The horizontal distance on the opticalaxis between the first lens and the second lens may be expressed asIN12. The ratio between ED12 and IN12 may be expressed as ED12/IN12. Thehorizontal distance between the second lens and the third lens at heightof ½ entrance pupil diameter (HEP) may be expressed as ED23. Thehorizontal distance on the optical axis between the second lens and thethird lens may be expressed as IN23. The ratio between ED23 and IN23 maybe expressed as ED23/IN23. The ratio relationships of the horizontaldistances between other two adjacent lenses in the optical imagecapturing system at height of ½ entrance pupil diameter (HEP) to thehorizontal distances on the optical axis between the two adjacent lensesare expressed in a similar way.

The horizontal distance parallel to the optical axis from a coordinatepoint on the image side of the sixth lens at height ½ HEP to the firstimage plane may be expressed as EBL. The horizontal distance parallel tothe optical axis from an intersection point where the image side of thesixth lens crosses the optical axis to the first image plane may beexpressed as BL. The embodiments of the present invention are able toachieve a balance between enhancing the capability of aberrationcorrection and reserving space to accommodate other opticals and thefollowing condition is satisfied: 0.2≤EBL/BL≤1.1. The optical imagecapturing system may further include a light filtering element. Thelight filtering is located between the sixth lens and the first imageplane. The distance parallel to the optical axis from a coordinate pointon the image side of the sixth lens at height of ½ HEP to the lightfiltering may be expressed as EIR. The distance parallel to the opticalaxis from an intersection point where the image side of the sixth lenscrosses the optical axis to the light filtering may be expressed as PIR.The embodiments of the present invention may satisfy the followingcondition: 0.1≤EIR/PIR≤1.1.

The height of optical image capturing system (HOS) may be reduced toachieve the minimization of the optical image capturing system when theabsolute value of f1 is larger than the absolute value of f6 (|f1>|f6|).

When the relationship |f2|+|f3|+|f4|+|f5| and |f1|+|f6| are satisfied,at least one of the second lens through fifth lens may have weakpositive refractive power or weak negative refractive power. The weakrefractive power indicates that an absolute value of the focal length ofa specific lens is greater than 10. When at least one of the second lensthrough the fifth lens has weak positive refractive power, the positiverefractive power of the first lens can be shared effectively, such thatthe unnecessary aberration will not appear too early. On the contrary,when at least one of the second lens and fifth lens has weak negativerefractive power, the aberration of the optical image capturing systemcan be corrected and fine-tuned.

In addition, the sixth lens may have negative refractive power, and theimage side surface of the sixth lens may be a concave surface. Hereby,this configuration is beneficial to shorten the back focal length of theoptical image capturing system in order to keep the miniaturization ofthe optical image capturing system. Moreover, at least one surface ofthe sixth lens may possess at least one inflection point which iscapable of effectively reducing the incident angle of the off-axis raysand may further correct the off-axis aberration.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed structure, operating principle and effects of the presentinvention will now be described in more details hereinafter withreference to the accompanying drawings that show various embodiments ofthe present invention as follows.

FIG. 1A is a schematic view of the optical image capturing systemaccording to the first embodiment of the present invention.

FIG. 1B shows the longitudinal spherical aberration curves, astigmaticfield curves, and optical distortion curve of the optical imagecapturing system in the order from left to right according to the firstembodiment of the present invention.

FIG. 1C is a characteristic diagram of modulation transfer of visiblelight spectrum for the optical image capturing system according to thefirst embodiment of the present invention.

FIG. 1D is a diagram showing the through focus MTF values (Through FocusMTF) of the visible light spectrum at the central field of view, 0.3field of view and 0.7 field of view of the first embodiment of thepresent invention.

FIG. 1E is a diagram showing the through focus MTF values of theinfrared light spectrum at the central field of view, 0.3 field of view,and 0.7 field of view of the first embodiment of the present invention.

FIG. 2A is a schematic view of the optical image capturing systemaccording to the second embodiment of the present invention.

FIG. 2B shows the longitudinal spherical aberration curves, astigmaticfield curves, and optical distortion curve of the optical imagecapturing system in the order from left to right according to the secondembodiment of the present invention.

FIG. 2C is a characteristic diagram of modulation transfer of visiblelight spectrum for the optical image capturing system according to thesecond embodiment of the present invention.

FIG. 2D is a diagram showing the through focus MTF values of the visiblelight spectrum at the central field of view, 0.3 field of view, and 0.7field of view of the second embodiment of the present invention.

FIG. 2E is a diagram showing the through focus MTF values of theinfrared light spectrum at the central field of view, 0.3 field of view,and 0.7 field of view of the second embodiment of the present invention.

FIG. 3A is a schematic view of the optical image capturing systemaccording to the third embodiment of the present invention.

FIG. 3B shows the longitudinal spherical aberration curves, astigmaticfield curves, and optical distortion curve of the optical imagecapturing system in the order from left to right according to the thirdembodiment of the present invention.

FIG. 3C is a characteristic diagram of modulation transfer of visiblelight spectrum for the optical image capturing system according to thethird embodiment of the present invention.

FIG. 3D is a diagram showing the through focus MTF values of the visiblelight spectrum at the central field of view, 0.3 field of view, and 0.7field of view of the third embodiment of the present invention.

FIG. 3E is a diagram showing the through focus MTF values of theinfrared light spectrum at the central field of view, 0.3 field of view,and 0.7 field of view of the third embodiment of the present invention.

FIG. 4A is a schematic view of the optical image capturing systemaccording to the fourth embodiment of the present invention.

FIG. 4B shows the longitudinal spherical aberration curves, astigmaticfield curves, and optical distortion curve of the optical imagecapturing system in the order from left to right according to the fourthembodiment of the present invention.

FIG. 4C is a characteristic diagram of modulation transfer of visiblelight spectrum for the optical image capturing system according to thefourth embodiment of the present invention.

FIG. 4D is a diagram showing the through focus MTF values of the visiblelight spectrum at the central field of view, 0.3 field of view and 0.7field of view of the fourth embodiment of the present invention.

FIG. 4E is a diagram showing the through focus MTF values of theinfrared light spectrum at the central field of view, 0.3 field of view,and 0.7 field of view of the fourth embodiment of the present invention.

FIG. 5A is a schematic view of the optical image capturing systemaccording to the fifth embodiment of the present invention.

FIG. 5B shows the longitudinal spherical aberration curves, astigmaticfield curves, and optical distortion curve of the optical imagecapturing system in the order from left to right according to the fifthembodiment of the present invention.

FIG. 5C is a characteristic diagram of modulation transfer of visiblelight spectrum for the optical image capturing system according to thefifth embodiment of the present invention.

FIG. 5D is a diagram showing the through focus MTF values of the visiblelight spectrum at the central field of view, 0.3 field of view and 0.7field of view of the fifth embodiment of the present invention.

FIG. 5E is a diagram showing the through focus MTF values of theinfrared light spectrum at the central field of view, 0.3 field of view,and 0.7 field of view of the fifth embodiment of the present invention.

FIG. 6A is a schematic view of the optical image capturing systemaccording to the sixth embodiment of the present invention.

FIG. 6B shows the longitudinal spherical aberration curves, astigmaticfield curves, and optical distortion curve of the optical imagecapturing system in the order from left to right according to the sixthembodiment of the present invention.

FIG. 6C is a characteristic diagram of modulation transfer of visiblelight spectrum for the optical image capturing system according to thesixth embodiment of the present invention.

FIG. 6D is a diagram showing the through focus MTF values of the visiblelight spectrum at the central field of view, 0.3 field of view and 0.7field of view of the sixth embodiment of the present invention.

FIG. 6E is a diagram showing the through focus MTF values of theinfrared light spectrum at the central field of view, 0.3 field of view,and 0.7 field of view of the sixth embodiment of the present disclosure.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

An optical image capturing system is provided, which includes, in theorder from the object side to the image side, a first lens, a secondlens, a third lens, a fourth lens, a fifth lens, a sixth lens, a firstimage plane and a second image plane. The optical image capturing systemmay further include an image sensing device, which is disposed on thefirst image plane.

The optical image capturing system may use three sets of operationwavelengths, which are respectively 486.1 nm, 587.5 nm and 656.2 nm, andwherein 587.5 nm is served as the primary reference wavelength and theprimary reference wavelength to obtain technical features of the opticalimage capturing system. The optical image capturing system may also usefive sets of wavelengths which are respectively 470 nm, 510 nm, 555 nm,610 nm and 650 nm, and wherein 555 nm is served as the primary referencewavelength and a reference wavelength to obtain technical features ofthe optical image capturing system.

The ratio of the focal length f of the optical image capturing system toa focal length fp of each lens with positive refractive power is PPR.The ratio of the focal length f of the optical image capturing system toa focal length fn of each lens with negative refractive power is NPR.The sum of the PPR of all lenses with positive refractive power is ΣPPR.The sum of the NPR of all lenses with negative refractive power is ΣNPR.The total refractive power and the total length of the optical imagecapturing system can be controlled easily when meeting followingcondition: 0.5≤ΣPPR/|ΣNPR|≤15. Preferably, the following condition issatisfied: 1≤ΣPPR/|ΣNPR|≤3.0.

The optical image capturing system may further include an image sensingdevice which is disposed on the first image plane. A half diagonal ofthe effective detection field of the image sensing device (imageformation height or the maximum image height of the optical imagecapturing system) may be expressed as HOI. The distance on the opticalaxis from the object side of the first lens to the first image plane maybe expressed as HOS. The following conditions are satisfied: HOS/HOI≤50and 0.5≤HOS/f≤150. Preferably, the following conditions are satisfied:1≤HOS/HOI≤40 and HOS/f≤1.5. Hereby, this configuration can keep theminiaturization of the optical image capturing system to collocate witha light and thin portable electronic product.

In addition, in the optical image capturing system of the presentinvention, according to different requirements, at least one aperturemay be arranged to reduce stray light and help elevate the imagequality.

In the optical image capturing system of the invention, the aperture maybe a front or middle aperture. Wherein, the front aperture is theaperture between a photographed object and the first lens while themiddle aperture is the aperture between the first lens and the firstimage plane. In the case that the aperture is the front aperture, it canmake the optical image capturing system generate a longer distancebetween the exit pupil and the first image plane, such that the opticalimage capturing system can accommodate more optical elements and theefficiency of the image sensing device in receiving image can beincreased. In the case that the aperture is the middle aperture, it canexpand the angle of view of the optical image capturing system, suchthat the optical image capturing system has the advantage of the cameralens with wide angle. The distance from the foregoing aperture to thefirst image plane may be expressed as InS. The following condition issatisfied: 0.2≤InS/HOS≤1.1. Therefore, the optical image capturingsystem can be kept miniaturized and have a feature of wide angle ofview.

In the optical image capturing system of the present invention, thedistance from the object side of the first lens to the image side of thesixth lens may be expressed as InTL. The sum of thicknesses of alllenses with refractive power on the optical axis may be expressed asΣTP. The following condition is satisfied: 0.1≤ΣTP/InTL≤0.9. Hereby,this configuration can keep the contrast ratio of the optical imagecapturing system and the yield rate about manufacturing lens at the sametime, and provide the proper back focal length so as to accommodateother elements.

The curvature radius of the object side of the first lens may beexpressed as R1. The curvature radius of the image side of the firstlens may be expressed as R2. The following condition is satisfied:0.001≤|R1/R2|≤25. Therefore, the first lens may have a suitablemagnitude of positive refractive power, so as to prevent the sphericalaberration from increasing too fast. Preferably, the following conditionis satisfied: 0.01≤|R1/R2|<12.

The curvature radius of the object side of the sixth lens may beexpressed as R11. The curvature radius of the image side of the sixthlens may be expressed as R12. The following condition is satisfied:−7<(R11−R12)/(R11+R12)<50. Hereby, this configuration is beneficial tocorrect the astigmatism generated by the optical image capturing system.

The distance on the optical axis between the first lens and the secondlens may be expressed as IN12. The following condition is satisfied:IN12/f≤60. Thereby, this configuration is helpful to improve thechromatic aberration of the lens in order to elevate the performance ofthe optical image capturing system.

The distance on the optical axis between the fifth lens and the sixthlens may be expressed as IN56. The following condition is satisfied:IN56/f≤3.0. Therefore, this configuration is helpful to improve thechromatic aberration of the lens in order to elevate the performance ofthe optical image capturing system.

The thicknesses of the first lens and the second lens on the opticalaxis may be expressed as TP1 and TP2, respectively. The followingcondition is satisfied: 0.1≤(TP1+IN12)/TP2≤10. Therefore, thisconfiguration is helpful to control the sensitivity of the optical imagecapturing system and improve the performance of the optical imagecapturing system.

The thicknesses of the fifth lens and the sixth lens on the optical axismay be expressed as TP5 and TP6, respectively, and the distance betweenthe foregoing two lenses on the optical axis may be expressed as IN56.The following condition is satisfied: 0.1≤(TP6+IN56)/TP5≤15. Therefore,this configuration is helpful to control the sensitivity of the opticalimage capturing system, and decreases the total height of the opticalimage capturing system.

The thicknesses of the second lens, third lens and fourth lens on theoptical axis may be expressed as TP2, TP3 and TP4, respectively. Thedistance between the second lens and the third lens on the optical axismay be expressed as IN23. The distance between the third lens and thefourth lens on the optical axis may be expressed as IN34. The distancebetween the fourth lens and the fifth lens on the optical axis may beexpressed as IN45. The distance between the object side of the firstlens and the image side of the sixth lens may be expressed as InTL. Thefollowing condition is satisfied: 0.1≤TP4/(IN34+TP4+IN45)<1. Therefore,this configuration is helpful to slightly correct the aberration of thepropagating process of the incident light layer by layer, and decreasethe total height of the optical image capturing system.

In the optical image capturing system of the present invention, aperpendicular distance between a critical point C61 on the object sideof the sixth lens and the optical axis may be expressed as HVT61. Aperpendicular distance between a critical point C62 on the image side ofthe sixth lens and the optical axis may be expressed as HVT62. Ahorizontal distance parallel to the optical axis from an intersectionpoint where the object side of the sixth lens crosses the optical axisto the critical point C61 may be expressed as SGC61. A horizontaldistance in parallel with the optical axis from an intersection pointwhere the image side of the sixth lens crosses the optical axis to thecritical point C62 may be expressed as SGC62. The following conditionsmay be satisfied: 0 mm≤HVT61≤3 mm; 0 mm≤HVT62≤6 mm; 0≤HVT61/HVT62; 0mm≤|SGC61|≤0.5 mm; 0 mm<|SGC62|≤2 mm, and 0<|SGC62|/(|SGC62|+TP6)≤0.9.Therefore, this configuration is helpful to correct the off-axisaberration effectively.

The optical image capturing system of the present invention meets thefollowing condition: 0.2≤HVT62/HOI≤0.9. Preferably, the followingcondition may be satisfied: 0.3≤HVT62/HOI≤0.8. Therefore, thisconfiguration is helpful to correct the aberration of surrounding fieldof view for the optical image capturing system.

The optical image capturing system of the present invention meets thefollowing condition: 0≤HVT62/HOS≤0.5. Preferably, the followingcondition may be satisfied: 0.2≤HVT62/HOS≤0.45. Therefore, thisconfiguration is helpful to correct the aberration of surrounding fieldof view for the optical image capturing system.

In the optical image capturing system of the present invention, thehorizontal distance parallel to the optical axis from an inflectionpoint on the object side of the sixth lens that is the first nearest tothe optical axis to an intersection point where the object side of thesixth lens crosses the optical axis may be expressed as SGI611. Thehorizontal distance in parallel with the optical axis from an inflectionpoint on the image side of the sixth lens that is the first nearest tothe optical axis to an intersection point where the image side of thesixth lens crosses the optical axis may be expressed as SGI621. Thefollowing conditions are satisfied: 0<SGI611/(SGI611+TP6)≤0.9 and0<SGI621/(SGI621+TP6)≤0.9. Preferably, the following conditions aresatisfied: 0.1≤SGI611/(SGI611+TP6)≤0.6 and 0.1 SGI621/(SGI621+TP6)≤0.6.

The horizontal distance in parallel with the optical axis from theinflection point on the object side of the sixth lens that is the secondnearest to the optical axis to an intersection point where the objectside of the sixth lens crosses the optical axis may be expressed asSGI612. The distance parallel to the optical axis from an inflectionpoint on the image side of the sixth lens that is the second nearest tothe optical axis to an intersection point where the image side of thesixth lens crosses the optical axis may be expressed as SGI622. Thefollowing conditions are satisfied: 0<SGI612/(SGI612+TP6)≤0.9 and0<SGI622/(SGI622+TP6)≤0.9. Preferably, the following conditions aresatisfied: 0.1≤SGI612/(SGI612+TP6)≤0.6 and 0.1≤SGI622/(SGI622+TP6)≤0.6.

The perpendicular distance between the inflection point on the objectside of the sixth lens that is the first nearest to the optical axis andthe optical axis may be expressed as HIF611. The perpendicular distancebetween an intersection point where the image side of the sixth lenscrosses the optical axis and an inflection point on the image side ofthe sixth lens that is the first nearest to the optical axis may beexpressed as HIF621. The following conditions are satisfied: 0.001mm≤|HIF611|≤5 mm and 0.001 mm≤|HIF621|≤5 mm. Preferably, the followingconditions are satisfied: 0.1 mm≤|HIF611|≤3.5 mm and 1.5 mm≤|HIF621|≤3.5mm.

The perpendicular distance between the inflection point on the objectside of the sixth lens that is the second nearest to the optical axisand the optical axis may be expressed as HIF612. The perpendiculardistance between an intersection point where the image side of the sixthlens crosses the optical axis and an inflection point on the image sideof the sixth lens that is the second nearest to the optical axis may beexpressed as HIF622. The following conditions are satisfied: 0.001mm≤|HIF612|≤5 mm and 0.001 mm≤|HIF622|≤5 mm. Preferably, the followingconditions are satisfied: 0.1 mm≤|HIF622|≤3.5 mm and 0.1 mm≤|HIF612|≤3.5mm.

The perpendicular distance between the inflection point on the objectside of the sixth lens that is the third nearest to the optical axis andthe optical axis may be expressed as HIF613. The perpendicular distancebetween an intersection point where the image side of the sixth lenscrosses the optical axis and an inflection point on the image side ofthe sixth lens that is the third nearest to the optical axis may beexpressed as HIF623. The following conditions are satisfied: 0.001mm≤|HIF613|≤5 mm and 0.001 mm≤|HIF623|≤5 mm. Preferably, the followingconditions are satisfied: 0.1 mm≤|HIF623|≤3.5 mm and 0.1 mm≤|HIF613|≤3.5mm.

The perpendicular distance between the inflection point on the objectside of the sixth lens that is the fourth nearest to the optical axisand the optical axis may be expressed as HIF614. The perpendiculardistance between an intersection point where the image side of the sixthlens crosses the optical axis and an inflection point on the image sideof the sixth lens that is the fourth nearest to the optical axis isexpressed as HIF624. The following conditions are satisfied: 0.001mm≤|HIF614|≤5 mm and 0.001 mm≤|HIF624|≤5 mm. Preferably, the followingconditions are satisfied: 0.1 mm≤|HIF624|≤3.5 mm and 0.1 mm≤|HIF614|≤3.5mm.

In one embodiment of the optical image capturing system of the presentinvention, it can be helpful to correct the chromatic aberration of theoptical image capturing system by arranging the lens with highcoefficient of dispersion and low coefficient of dispersion in astaggered manner.

The equation for the aforementioned aspheric surface is:z=ch ²/[1+[1−(k+1)c ² h ²]^(0.5)]+A ₄ h ⁴ +A ₆ h ⁶ +A ₈ h ⁸ +A ₁₀ h ¹⁰+A ₁₂ h ¹² +A ₁₄ h ¹⁴ +A ₁₆ h ¹⁶ +A ₁₈ h ¹⁸ +A ₂₀ h ²⁰+ . . .  (1),where z is a position value of the position along the optical axis andat the height h which refers to the surface apex; k is the conecoefficient, c is the reciprocal of curvature radius, and A₄, A₆, A₈,A₁₀, A₁₂, A₁₄, A₁₆, A₁₈, and A₂₀ are high order aspheric coefficients.

In the optical image capturing system provided by the present invention,the lens may be made of glass or plastic. If the lens is made ofplastic, it can reduce the manufacturing cost as well as the weight ofthe lens effectively. If lens is made of glass, it can control the heateffect and increase the design space of the configuration of the lenswith refractive power in the optical image capturing system.Furthermore, the object side and the image side of the first lensthrough sixth lens may be aspheric, which can gain more controlvariables and even reduce the number of the used lenses in contrast totraditional glass lens in addition to the use of reducing theaberration. Thus, the total height of the optical image capturing systemcan be reduced effectively.

Furthermore, in the optical image capturing system provided by thepresent invention, when the surface of lens is a convex surface, thesurface of that lens is a convex surface in the vicinity of the opticalaxis in principle. When the surface of lens is a concave surface, thesurface of that lens is a concave surface in the vicinity of the opticalaxis in principle.

The optical image capturing system of the present invention can beapplied to the optical image capturing system with automatic focus basedon the demand and have the characters of the good aberration correctionand the good image quality. Thereby, the optical image capturing systemexpands the application aspect.

The optical image capturing system of the present invention can furtherinclude a driving module based on the demand. The driving module may becoupled with the lens and enable the movement of the lens. The foregoingdriving module may be the voice coil motor (VCM) which is applied tomove the lens to focus, or may be the optical image stabilization (OIS)which is applied to reduce the frequency which lead to the out focus dueto the vibration of the camera lens in the shooting process.

In the optical image capturing system of the present invention, at leastone lens among the first lens, second lens, third lens, fourth lens,fifth lens and sixth lens may further be a light filtering element forlight with wavelength of less than 500 nm based on the requirements. Thelight filtering element may be made by coating film on at least onesurface of that lens with certain filtering function, or forming thatlens with material that can filter light with short wavelength.

The first image plane of the optical image capturing system of thepresent invention may be a plane or a curved surface based on the designrequirement. When the first image plane is a curved surface (e.g. aspherical surface with a curvature radius), it is helpful to decreasethe required incident angle to focus rays on the first image plane. Inaddition to the aid of the miniaturization of the length of the opticalimage capturing system (TTL), this configuration is helpful to elevatethe relative illumination at the same time.

According to the foregoing implementation method, the specificembodiments with figures are presented in detail as below.

The First Embodiment

Please refer to FIG. 1A and FIG. 1B, wherein FIG. 1A is a schematic viewof the optical image capturing system according to the first embodimentof the present invention and FIG. 1B shows the longitudinal sphericalaberration curves, astigmatic field curves, and optical distortion curveof the optical image capturing system in the order from left to rightaccording to the first embodiment of the present invention. FIG. 1C is acharacteristic diagram of modulation transfer of visible light spectrumfor the optical image capturing system according to the first embodimentof the present invention. FIG. 1D is a diagram showing the through focusMTF values (Through Focus MTF) of the visible light spectrum at thecentral field of view, 0.3 field of view and 0.7 field of view of thefirst embodiment of the present invention. FIG. 1E is a diagram showingthe through focus MTF values of the infrared light spectrum at thecentral field of view, 0.3 field of view, and 0.7 field of view of thefirst embodiment of the present invention. As shown in FIG. 1A, in theorder from the object side to the image side, the optical imagecapturing system includes a first lens 110, an aperture 100, a secondlens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixthlens 160, an IR-bandstop filter 180, a first image plane 190, a secondimage plane and an image sensing device 192.

The first lens 110 has negative refractive power and is made of plastic.An object side 112 of the first lens 110 is a concave surface and animage side 114 of the first lens 110 is a concave surface, and theobject side 112 and the image side 114 of the first lens 110 are bothaspheric. The object side 112 of the first lens 110 has two inflectionpoints. The thickness of the first lens 110 on the optical axis is TP1.The thickness of the first lens 110 at the height of ½ entrance pupildiameter (HEP) may be expressed as ETP1.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 112 of the first lens 110 which is the firstnearest to the optical axis to an intersection point where the objectside 112 of the first lens 110 crosses the optical axis may be expressedas SGI111. The horizontal distance parallel to the optical axis from aninflection point on the image side 114 of the first lens 110 which isthe first nearest to the optical axis to an intersection point where theimage side 114 of the first lens 110 crosses the optical axis may beexpressed as SGI121. The following conditions are satisfied:SGI111=−0.0031 mm, and |SGI111|/(|SGI111|+TP1)=0.0016.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 112 of the first lens 110 that is the secondnearest to the optical axis to an intersection point where the objectside 112 of the first lens 110 crosses the optical axis may be expressedas SGI112. The horizontal distance parallel to the optical axis from aninflection point on the image side 114 of the first lens 110 that is thesecond nearest to the optical axis to an intersection point where theimage side 114 of the first lens 110 crosses the optical axis may beexpressed as SGI122. The following conditions are satisfied:SGI112=1.3178 mm and |SGI112|/(|SGI112|+TP1)=0.4052.

The perpendicular distance from the inflection point on the object side112 of the first lens 110 that is the first nearest to the optical axisto the optical axis may be expressed as HIF111. The perpendiculardistance from the inflection point on the image side 114 of the firstlens 110 that is the first nearest to the optical axis to anintersection point where the image side of the first lens crosses theoptical axis may be expressed as HIF121. The following conditions aresatisfied: HIF111=0.5557 mm and HIF111/HOI=0.1111.

The perpendicular distance from the inflection point on the object side112 of the first lens 110 that is the second nearest to the optical axisto the optical axis may be expressed as HIF112. The perpendiculardistance from the inflection point on the image side 114 of the firstlens 110 that is the second nearest to the optical axis to anintersection point where the image side 114 of the first lens 110crosses the optical axis may be expressed as HIF122. The followingconditions are satisfied: HIF112=5.3732 mm and HIF112/HOI=1.0746.

The second lens 120 has positive refractive power and is made ofplastic. An object side 122 of the second lens 120 is a convex surfaceand an image side 124 of the second lens 120 is a convex surface, andthe object side 122 and the image side 124 of the second lens 120 areboth aspheric. The object side 122 of the second lens 120 has oneinflection point. The thickness of the second lens 120 on the opticalaxis is TP2. The thickness of the second lens 120 at the height of ½entrance pupil diameter (HEP) may be expressed as ETP2.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 122 of the second lens 120 that is nearest tothe optical axis to the intersection point where the object side 122 ofthe second lens 120 crosses the optical axis may be expressed as SGI211.The horizontal distance parallel to the optical axis from an inflectionpoint on the image side 124 of the second lens 120 that is nearest tothe optical axis to the intersection point where the image side 124 ofthe second lens 120 crosses the optical axis may be expressed as SGI221.The following conditions are satisfied: SGI211=0.1069 mm,|SGI211|/(|SGI211|+TP2)=0.0412, SGI221=0 mm and|SGI221|/(|SGI221|+TP2)=0.

The perpendicular distance from the inflection point on the object side122 of the second lens 120 that is nearest to the optical axis to theoptical axis may be expressed as HIF211. The perpendicular distance fromthe inflection point on the image side 124 of the second lens 120 thatis nearest to the optical axis to the intersection point where the imageside 124 of the second lens 120 crosses the optical axis may beexpressed as HIF221. The following conditions are satisfied:HIF211=1.1264 mm, HIF211/HOI=0.2253, HIF221=0 mm and HIF221/HOI=0.

The third lens 130 has negative refractive power and is made of plastic.An object side 132 of the third lens 130 is a concave surface and animage side 134 of the third lens 130 is a convex surface, and the objectside 132 and the image side 134 of the third lens 130 are both aspheric.Both of the object side 132 and the image side 134 of the third lens 130have one inflection point. The thickness of the third lens 130 on theoptical axis is TP3. The thickness of the third lens 130 at the heightof ½ entrance pupil diameter (HEP) may be expressed as ETP3.

The distance parallel to the optical axis from an inflection point onthe object side 132 of the third lens 130 that is nearest to the opticalaxis to an intersection point where the object side 132 of the thirdlens 130 crosses the optical axis may be expressed as SGI311. Thedistance parallel to the optical axis from an inflection point on theimage side 134 of the third lens 130 that is nearest to the optical axisto an intersection point where the image side 134 of the third lens 130crosses the optical axis may be expressed as SGI321. The followingconditions are satisfied: SGI311=−0.3041 mm,|SGI311|/(|SGI311|+TP3)=0.4445, SGI321=−0.1172 mm and|SGI321|/(|SGI321|+TP3)=0.2357.

The perpendicular distance between the inflection point on the objectside 132 of the third lens 130 that is nearest to the optical axis andthe optical axis may be expressed as HIF311. The perpendicular distancebetween the inflection point on the image side 134 of the third lens 130that is nearest to the optical axis and the intersection point where theimage side 134 of the third lens 130 crosses the optical axis may beexpressed as HIF321. The following conditions are satisfied:HIF311=1.5907 mm, HIF311/HOI=0.3181, HIF321=1.3380 mm andHIF321/HOI=0.2676.

The fourth lens 140 has positive refractive power and is made ofplastic. An object side 142 of the fourth lens 140 is a convex surfaceand an image side 144 of the fourth lens 140 is a concave surface, andthe object side 142 and the image side 144 of the fourth lens 140 areboth aspheric. The object side 142 of the fourth lens 140 has twoinflection points, and the image side 144 of the fourth lens 140 has oneinflection point. The thickness of the fourth lens 140 on the opticalaxis is TP4. The thickness of the fourth lens 140 at the height of ½entrance pupil diameter (HEP) may be expressed as ETP4.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 142 of the fourth lens 140 that is the firstnearest to the optical axis to the intersection point where the objectside 142 of the fourth lens 140 crosses the optical axis may beexpressed as SGI411. The horizontal distance parallel to the opticalaxis from an inflection point on the image side 144 of the fourth lens140 that is the first nearest to the optical axis to the intersectionpoint where the image side 144 of the fourth lens 140 crosses theoptical axis may be expressed as SGI421. The following conditions aresatisfied: SGI411=0.0070 mm, |SGI411|/(|SGI411|+TP4)=0.0056,SGI421=0.0006 mm and |SGI421|/(|SGI421|+TP4)=0.0005.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 142 of the fourth lens 140 that is the secondnearest to the optical axis to the intersection point where the objectside 142 of the fourth lens 140 crosses the optical axis may beexpressed as SGI412. The horizontal distance parallel to the opticalaxis from an inflection point on the image side 144 of the fourth lens140 that is the second nearest to the optical axis to the intersectionpoint where the image side 144 of the fourth lens 140 crosses theoptical axis may be expressed as SGI422. The following conditions aresatisfied: SGI412=−0.2078 mm and |SGI412|/(|SGI412|+TP4)=0.1439.

The perpendicular distance between the inflection point on the objectside 142 of the fourth lens 140 that is the first nearest to the opticalaxis and the optical axis may be expressed as HIF411. The perpendiculardistance on the optical axis between the inflection point on the imageside 144 of the fourth lens 140 that is the first nearest to the opticalaxis and the intersection point where the image side 144 of the fourthlens 140 crosses the optical axis may be expressed as HIF421. Thefollowing conditions are satisfied: HIF411=0.4706 mm, HIF411/HOI=0.0941,HIF421=0.1721 mm and HIF421/HOI=0.0344.

The perpendicular distance between the inflection point on the objectside 142 of the fourth lens 140 that is the second nearest to theoptical axis and the optical axis may be expressed as HIF412. Theperpendicular distance between the inflection point on the image side144 of the fourth lens 140 that is the second nearest to the opticalaxis and the intersection point where the image side 144 of the fourthlens 140 crosses the optical axis may be expressed as HIF422. Thefollowing conditions are satisfied: HIF412=2.0421 mm andHIF412/HOI=0.4084.

The fifth lens 150 has positive refractive power and is made of plastic.An object side 152 of the fifth lens 150 is a convex surface and animage side 154 of the fifth lens 150 is a convex surface, and the objectside 152 and the image side 154 of the fifth lens 150 are both aspheric.The object side 152 of the fifth lens 150 has two inflection points andthe image side 154 of the fifth lens 150 has one inflection point. Thethickness of the fifth lens 150 on the optical axis is TP5. Thethickness of the fifth lens 150 at the height of ½ entrance pupildiameter (HEP) may be expressed as ETP5.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 152 of the fifth lens 150 that is the firstnearest to the optical axis to the intersection point where the objectside 152 of the fifth lens 150 crosses the optical axis may be expressedas SGI511. The horizontal distance parallel to the optical axis from aninflection point on the image side 154 of the fifth lens 150 that is thefirst nearest to the optical axis to the intersection point where theimage side 154 of the fifth lens 150 crosses the optical axis may beexpressed as SGI521. The following conditions are satisfied:SGI511=0.00364 mm, |SGI511|/(|SGI511|+TP5)=0.00338, SGI521=−0.63365 mmand |SGI521|/(|SGI521|+TP5)=0.37154.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 152 of the fifth lens 150 that is the secondnearest to the optical axis to the intersection point where the objectside 152 of the fifth lens 150 crosses the optical axis may be expressedas SGI512. The horizontal distance parallel to the optical axis from aninflection point on the image side 154 of the fifth lens 150 that is thesecond nearest to the optical axis to the intersection point where theimage side 154 of the fifth lens 150 crosses the optical axis isexpressed as SGI522. The following conditions are satisfied:SGI512=−0.32032 mm and |SGI512|/(|SGI512|+TP5)=0.23009.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 152 of the fifth lens 150 that is the thirdnearest to the optical axis to the intersection point where the objectside 152 of the fifth lens 150 crosses the optical axis may be expressedas SGI513. The horizontal distance parallel to the optical axis from aninflection point on the image side 154 of the fifth lens 150 that is thethird nearest to the optical axis to the intersection point where theimage side 154 of the fifth lens 150 crosses the optical axis may beexpressed as SGI523. The following conditions are satisfied: SGI513=0mm, |SGI513|/(|SGI513|+TP5)=0, SGI523=0 mm and|SGI523|/(|SGI523|+TP5)=0.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 152 of the fifth lens 150 that is the fourthnearest to the optical axis to the intersection point where the objectside 152 of the fifth lens 150 crosses the optical axis may be expressedas SGI514. The horizontal distance parallel to the optical axis from aninflection point on the image side 154 of the fifth lens 150 that is thefourth nearest to the optical axis to the intersection point where theimage side 154 of the fifth lens 150 crosses the optical axis may beexpressed as SGI524. The following conditions are satisfied: SGI514=0mm, |SGI514|/(|SGI514|+TP5)=0, SGI524=0 mm and|SGI524|/(|SGI524|+TP5)=0.

The perpendicular distance between the optical axis and the inflectionpoint on the object side 152 of the fifth lens 150 that is the firstnearest to the optical axis may be expressed as HIF511. Theperpendicular distance between the optical axis and the inflection pointon the image side 154 of the fifth lens 150 that is the first nearest tothe optical axis may be expressed as HIF521. The following conditionsare satisfied: HIF511=0.28212 mm, HIF511/HOI=0.05642, HIF521=2.13850 mmand HIF521/HOI=0.42770.

The perpendicular distance between the inflection point on the objectside 152 of the fifth lens 150 that is the second nearest to the opticalaxis and the optical axis may be expressed as HIF512. The perpendiculardistance between the inflection point on the image side 154 of the fifthlens 150 that is the second nearest to the optical axis and the opticalaxis may be expressed as HIF522. The following conditions are satisfied:HIF512=2.51384 mm and HIF512/HOI=0.50277.

The perpendicular distance between the inflection point on the objectside 152 of the fifth lens 150 that is the third nearest to the opticalaxis and the optical axis may be expressed as HIF513. The perpendiculardistance between the inflection point on the image side 154 of the fifthlens 150 that is the third nearest to the optical axis and the opticalaxis may be expressed as HIF523. The following conditions are satisfied:HIF513=0 mm, HIF513/HOI=0, HIF523=0 mm and HIF523/HOI=0.

The perpendicular distance between the inflection point on the objectside 152 of the fifth lens 150 that is the fourth nearest to the opticalaxis and the optical axis may be expressed as HIF514. The perpendiculardistance between the inflection point on the image side 154 of the fifthlens 150 that is the fourth nearest to the optical axis and the opticalaxis may be expressed as HIF524. The following conditions are satisfied:HIF514=0 mm, HIF514/HOI=0, HIF524=0 mm and HIF524/HOI=0.

The sixth lens 160 has negative refractive power and is made of plastic.An object side 162 of the sixth lens 160 is a concave surface and animage side 164 of the sixth lens 160 is a concave surface, and theobject side 162 of the sixth lens 160 has two inflection points and theimage side 164 of the sixth lens 160 has one inflection point. Hereby,the incident angle of each field of view on the sixth lens 160 can beeffectively adjusted and the spherical aberration can be improved. Thethickness of the sixth lens 160 on the optical axis is TP6. Thethickness of the sixth lens 160 at the height of ½ entrance pupildiameter (HEP) may be expressed as ETP6.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 162 of the sixth lens 160 that is the firstnearest to the optical axis to the intersection point where the objectside 162 of the sixth lens 160 crosses the optical axis may be expressedas SGI611. The horizontal distance parallel to the optical axis from aninflection point on the image side 164 of the sixth lens 160 that is thefirst nearest to the optical axis to the intersection point where theimage side 164 of the sixth lens 160 crosses the optical axis may beexpressed as SGI621. The following conditions are satisfied:SGI611=−0.38558 mm, |SGI61|/(|SGI611|+TP6)=0.27212, SGI621=0.12386 mmand |SGI621/(|SGI621|+TP6)=0.10722.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side 162 of the sixth lens 160 that is the secondnearest to the optical axis to an intersection point where the objectside 162 of the sixth lens 160 crosses the optical axis may be expressedas SGI612. The horizontal distance parallel to the optical axis from aninflection point on the image side 164 of the sixth lens 160 that is thesecond nearest to the optical axis to the intersection point where theimage side 164 of the sixth lens 160 crosses the optical axis may beexpressed as SGI622. The following conditions are satisfied:SGI612=−0.47400 mm, |SGI612|/(|SGI612|+TP6)=0.31488, SGI622=0 mm and|SGI622|/(|SGI622|+TP6)=0.

The perpendicular distance between the inflection point on the objectside 162 of the sixth lens 160 that is the first nearest to the opticalaxis and the optical axis may be expressed as HIF611. The perpendiculardistance between the inflection point on the image side 164 of the sixthlens 160 that is the first nearest to the optical axis and the opticalaxis may be expressed as HIF621. The following conditions are satisfied:HIF611=2.24283 mm, HIF611/HOI=0.44857, HIF621=1.07376 mm andHIF621/HOI=0.21475.

The perpendicular distance between the inflection point on the objectside 162 of the sixth lens 160 that is the second nearest to the opticalaxis and the optical axis may be expressed as HIF612. The perpendiculardistance between the inflection point on the image side 164 of the sixthlens 160 that is the second nearest to the optical axis and the opticalaxis may be expressed as HIF622. The following conditions are satisfied:HIF612=2.48895 mm and HIF612/HOI=0.49779.

The perpendicular distance between the inflection point on the objectside 162 of the sixth lens 160 that is the third nearest to the opticalaxis and the optical axis may be expressed as HIF613. The perpendiculardistance between the inflection point on the image side 164 of the sixthlens 160 that is the third nearest to the optical axis and the opticalaxis may be expressed as HIF623. The following conditions are satisfied:HIF613=0 mm, HIF613/HOI=0, HIF623=0 mm and HIF623/HOI=0.

The perpendicular distance between the inflection point on the objectside 162 of the sixth lens 160 that is the fourth nearest to the opticalaxis and the optical axis may be expressed as HIF614. The perpendiculardistance between the inflection point on the image side 164 of the sixthlens 160 that is the fourth nearest to the optical axis and the opticalaxis may be expressed as HIF624. The following conditions are satisfied:HIF614=0 mm, HIF614/HOI=0, HIF624=0 mm and HIF624/HOI=0.

In the first embodiment, the distance parallel to the optical axisbetween the coordinate point of the object side 112 of the first lens110 at a height of ½ HEP and the first image plane 190 may be expressedas ETL. The distance parallel to the optical axis between the coordinatepoint of the object side 112 of the first lens 110 at a height of ½ HEPand the coordinate point of the image side 164 of the sixth lens 160 ata height of ½ HEP may be expressed as EIN. The following conditions aresatisfied: ETL=19.304 mm, EIN=15.733 mm and EIN/ETL=0.815.

The first embodiment meets the following conditions: ETP1=2.371 mm;ETP2=2.134 mm; ETP3=0.497 mm; ETP4=1.111 mm; ETP5=1.783 mm; ETP6=1.404mm; the sum of ETP1 to ETP6 described above SETP=9.300 mm; TP1=2.064 mm;TP2=2.500 mm; TP3=0.380 mm; TP4=1.186 mm; TP5=2.184 mm, TP6=1.105 mm,the sum of TP1 to TP6 described above STP=9.419 mm; SETP/STP=0.987, andSETP/EIN=0.5911.

The first embodiment particularly controls the ratio relationship(ETP/TP) between the thickness (ETP) of each lens at a height of ½entrance pupil diameter (HEP) and the thickness (TP) of the lens towhich the surface belongs on the optical axis in order to achieve abalance between manufacturability and capability of aberrationcorrection. The following relationships are satisfied: ETP1/TP=1.149,ETP2/TP2=0.854, ETP3/TP3=1.308, ETP4/TP4=0.936, ETP5/TP5=0.817, andETP6/TP6=1.271.

The first embodiment controls the horizontal distance between each twoadjacent lenses at a height of ½ entrance pupil diameter (HEP) toachieve a balance between the degree of miniaturization for the lengthof the optical image capturing system HOS, the manufacturability and thecapability of aberration correction. The ratio relationship (ED/IN) ofthe horizontal distance (ED) between the two adjacent lens at the heightof ½ entrance pupil diameter (HEP) to the horizontal distance (IN) onthe optical axis between the two adjacent lens is particularlycontrolled. The following relationships are satisfied: the horizontaldistance parallel to the optical axis between the first lens 110 and thesecond lens 120 at a height of ½ entrance pupil diameter (HEP)ED12=5.285 mm. The horizontal distance parallel to the optical axisbetween the second lens 120 and the third lens 130 at a height of ½entrance pupil diameter (HEP) ED23=0.283 mm. The horizontal distanceparallel to the optical axis between the third lens 130 and the fourthlens 140 at a height of ½ entrance pupil diameter (HEP) ED34=0.330 mm.The horizontal distance parallel to the optical axis between the fourthlens 140 and the fifth lens 150 at a height of ½ entrance pupil diameter(HEP) ED45=0.348 mm. The horizontal distance parallel to the opticalaxis between the fifth lens 150 and the sixth lens 160 at a height of ½entrance pupil diameter (HEP) ED56=0.187 mm. The sum of ED12 to ED56described above is expressed as SED, and SED=6.433 mm.

The horizontal distance on the optical axis between the first lens 110and the second lens 120 IN12=5.470 mm and ED12/IN12=0.966. Thehorizontal distance on the optical axis between the second lens 120 andthe third lens 130 IN23=0.178 mm and ED23/IN23=1.590. The horizontaldistance on the optical axis between the third lens 130 and the fourthlens 140 IN34=0.259 mm and ED34/IN34=0.273. The horizontal distance onthe optical axis between the fourth lens 140 and the fifth lens 150IN45=0.209 mm and ED45/IN45=1.664. The horizontal distance on theoptical axis between the fifth lens 150 and the sixth lens 160IN56=0.034 mm and ED56/IN56=5.557. The sum of IN12 to IN56 describedabove is expressed as SIN and SIN=6.150 mm. SED/SIN=1.046.

The first embodiment meets the following conditions: ED12/ED23=18.685,ED23/ED34=0.857, ED34/ED45=0.947, ED45/ED56=1.859, IN12/IN23=30.746,IN23/IN34=0.686, IN34/IN45=1.239 and IN45/IN56=6.207.

The horizontal distance parallel to the optical axis between acoordinate point on the image side 164 of the sixth lens 160 at theheight of ½ HEP and the first image plane 190 may be expressed asEBL=3.570 mm. The horizontal distance parallel to the optical axisbetween an intersection point where the image side 164 of the sixth lens160 crosses the optical axis and the first image plane 190 may beexpressed as BL=4.032 mm. The embodiment of the present invention maymeet the following relationship: EBL/BL=0.8854. In the first embodiment,the distance parallel to the optical axis between the coordinate pointon the image side 164 of the sixth lens 160 at the height of ½ HEP andthe IR-bandstop filter may be expressed as EIR=1.950 mm. The distanceparallel to the optical axis between the intersection point where theimage side 164 of the sixth lens 160 crosses the optical axis and theIR-bandstop filter may be expressed as PIR=2.121 mm. The followingrelationship is satisfied: EIR/PIR=0.920.

The IR-bandstop filter 180 is made of glass. The IR-bandstop filter 180is disposed between the sixth lens 160 and the first image plane 190,and does not affect the focal length of the optical image capturingsystem 10.

In the optical image capturing system 10 of the first embodiment, thefocal length of the optical image capturing system 10 may be expressedas f, the entrance pupil diameter of the optical image capturing system10 may be expressed as HEP, and a half maximum angle of view of theoptical image capturing system 10 may be expressed as HAF. The detailedparameters are shown as below: f=4.075 mm, f/HEP=1.4, HAF=50.001 deg andtan(HAF)=1.1918.

In the optical image capturing system 10 of the first embodiment, thefocal length of the first lens 110 may be expressed as f1 and the focallength of the sixth lens 160 may be expressed as f6. The followingconditions are satisfied: f1=−7.828 mm, |f/f1|=0.52060, f6=−4.886 and|f1|>|f6|.

In the optical image capturing system 10 of the first embodiment, focallengths of the second lens 120 to the fifth lens 150 may be expressed asf2, f3, f4 and f5, respectively. The following conditions are satisfied:|f2|+|f3|+|f4|+|f5|=95.50815 mm, |f1|+|f6|=12.71352 mm and|f2|+|f3|+|f4|+|f5|>|f1|+|f6|.

The ratio of the focal length f of the optical image capturing system 10to the focal length fp of each of lens with positive refractive powermay be expressed as PPR. The ratio of the focal length f of the opticalimage capturing system 10 to a focal length fn of each of lens withnegative refractive power may be expressed as NPR. In the optical imagecapturing system 10 of the first embodiment, the sum of the PPR of alllenses with positive refractive power is ΣPPR=f/f2+f/f4+f/f5=1.63290.The sum of the NPR of all lenses with negative refractive power isΣNPR=|f/f1|+|f/f3|+|f/f6|=1.51305, ΣPPR/|ΣNPR|=1.07921. Simultaneously,the following conditions are also satisfied: |f/f2|=0.69101,|f/f3|=0.15834, |f/f4|=0.06883, |f/f5|=0.87305 and |f/f6|=0.83412.

In the optical image capturing system 10 of the first embodiment, thedistance from the object side 112 of the first lens 110 to the imageside 164 of the sixth lens 160 may be expressed as InTL. The distancefrom the object side 112 of the first lens 110 to the first image plane190 may be expressed as HOS. The distance from the aperture 100 to thefirst image plane 190 may be expressed as InS. A half diagonal length ofthe effective detection field of the image sensing device 192 may beexpressed as HOI. The distance from the image side 164 of the sixth lens160 to the first image plane 190 may be expressed as BFL. The followingconditions are satisfied: InTL+BFL=HOS, HOS=19.54120 mm, HOI=5.0 mm,HOS/HOI=3.90824, HOS/f=4.7952, InS=11.685 mm, InS/HOS=0.59794 andInTL/HOS≤0.87.

In the optical image capturing system 10 of the first embodiment, atotal thickness of all lenses with refractive power on the optical axismay be expressed as ΣTP. The following conditions are satisfied:ΣTP=8.13899 mm and ΣTP/InTL=0.52477. Hereby, this configuration can keepthe contrast ratio of the optical image capturing system and the yieldrate about manufacturing lens at the same time, and provide the properback focal length so as to accommodate other elements.

In the optical image capturing system 10 of the first embodiment, thecurvature radius of the object side 112 of the first lens 110 may beexpressed as R1. The curvature radius of the image side 114 of the firstlens 110 may be expressed as R2. The following condition is satisfied:|R1/R2|=8.99987. Hereby, the first lens has a suitable magnitude ofpositive refractive power, so as to prevent the longitudinal sphericalaberration from increasing too fast.

In the optical image capturing system 10 of the first embodiment, thecurvature radius of the object side 162 of the sixth lens 160 may beexpressed as R11. The curvature radius of the image side 164 of thesixth lens 160 may be expressed as R12. The following condition issatisfied: (R11−R12)/(R11+R12)=1.27780. Hereby, this configuration isbeneficial to correct the astigmatism generated by the optical imagecapturing system.

In the optical image capturing system 10 of the first embodiment, thesum of focal lengths of all lenses with positive refractive power may beexpressed as ΣPP. The following conditions are satisfied:ΣPP=f2+f4+f5=69.770 mm and f5/(f2+f4+f5)=0.067. Hereby, thisconfiguration is helpful to distribute the positive refractive power ofa single lens to other lens with positive refractive power in anappropriate way, so as to suppress the generation of noticeableaberrations in the propagating process of the incident light in theoptical image capturing system 10.

In the optical image capturing system 10 of the first embodiment, thesum of focal lengths of all lenses with negative refractive power may beexpressed as ΣNP. The following conditions are satisfied:ΣNP=f1+f3+f6=−38.451 mm and f6/(f1+f3+f6)=0.127. Hereby, thisconfiguration is helpful to distribute the sixth lens with negativerefractive power to other lens with negative refractive power in anappropriate way, so as to suppress the generation of noticeableaberrations in the propagating process of the incident light in theoptical image capturing system 10.

In the optical image capturing system 10 of the first embodiment, thedistance on the optical axis between the first lens 110 and the secondlens 120 may be expressed as IN12. The following conditions aresatisfied: IN12=6.418 mm and IN12/f=1.57491. Therefore, thisconfiguration is helpful to improve the chromatic aberration of the lensin order to elevate the performance of the optical image capturingsystem 10 of the first embodiment.

In the optical image capturing system 10 of the first embodiment, adistance on the optical axis between the fifth lens 150 and the sixthlens 160 may be expressed as IN56. The following condition is satisfied:IN56=0.025 mm and IN56/f=0.00613. Therefore, this configuration ishelpful to improve the chromatic aberration of the lens in order toelevate the performance of the optical image capturing system 10 of thefirst embodiment.

In the optical image capturing system 10 of the first embodiment, thethicknesses of the first lens 110 and the second lens 120 on the opticalaxis may be expressed as TP1 and TP2, respectively. The followingconditions are satisfied: TP1=1.934 mm, TP2=2.486 mm and(TP1+IN12)/TP2=3.36005. Therefore, this configuration is helpful tocontrol the sensitivity generated by the optical image capturing system10 and elevate the performance of the optical image capturing system 10of the first embodiment.

In the optical image capturing system 10 of the first embodiment, thethicknesses of the fifth lens 150 and the sixth lens 160 on the opticalaxis may be expressed as TP5 and TP6, respectively, and the distancebetween the aforementioned two lenses on the optical axis is IN56. Thefollowing conditions are satisfied: TP5=1.072 mm, TP6=1.031 mm and(TP6+IN56)/TP5=0.98555. Therefore, this configuration is helpful tocontrol the sensitivity generated by the optical image capturing system10 and reduce the total height of the optical image capturing system 10.

In the optical image capturing system 10 of the first embodiment, thedistance on the optical axis between the third lens 130 and the fourthlens 140 may be expressed as IN34. The distance on the optical axisbetween the fourth lens 140 and the fifth lens 150 may be expressed asIN45. The following conditions are satisfied: IN34=0.401 mm, IN45=0.025mm and TP4/(IN34+TP4+IN45)=0.74376. Therefore, this configuration ishelpful to slightly correct the aberration of the propagating process ofthe incident light layer by layer and decrease the total height of theoptical image capturing system 10.

In the optical image capturing system 10 of the first embodiment, ahorizontal distance parallel to the optical axis from an intersectionpoint where the object side 152 of the fifth lens 150 crosses theoptical axis to a maximum effective half diameter position on the objectside 152 of the fifth lens 150 may be expressed as InRS51. Thehorizontal distance parallel to the optical axis from an intersectionpoint where the image side 154 of the fifth lens 150 crosses the opticalaxis to a maximum effective half diameter position on the image side 154of the fifth lens 150 may be expressed as InRS52. The thickness of thefifth lens 150 on the optical axis may be expressed as TP5. Thefollowing conditions are satisfied: InRS51=−0.34789 mm, InRS52=−0.88185mm, |InRS51|/TP5=0.32458 and |InRS52|/TP5=0.82276. Hereby, thisconfiguration is favorable to the manufacturing and forming of lens andkeeps the miniaturization of the optical image capturing systemeffectively.

In the optical image capturing system 10 of the first embodiment, theperpendicular distance between a critical point on the object side 152of the fifth lens 150 and the optical axis may be expressed as HVT51.The perpendicular distance between a critical point on the image side154 of the fifth lens 150 and the optical axis may be expressed asHVT52. The following conditions are satisfied: HVT51=0.515349 mm andHVT52=0 mm.

In the optical image capturing system 10 of the first embodiment, ahorizontal distance in parallel with the optical axis from anintersection point where the object side 162 of the sixth lens 160crosses the optical axis to a maximum effective half diameter positionon the object side 162 of the sixth lens 160 may be expressed as InRS61.A distance parallel to the optical axis from an intersection point wherethe image side 164 of the sixth lens 160 crosses the optical axis to amaximum effective half diameter position on the image side 164 of thesixth lens 160 may be expressed as InRS62. The thickness of the sixthlens 160 is TP6. The following conditions are satisfied: InRS61=−0.58390mm, InRS62=0.41976 mm, |InRS61|/TP6=0.56616 and |InRS62|/TP6=0.40700.Hereby, this configuration is favorable to the manufacturing and formingof lens and keeping the miniaturization of the optical image capturingsystem 10 effectively.

In the optical image capturing system 10 of the first embodiment, theperpendicular distance between a critical point on the object side 162of the sixth lens 160 and the optical axis may be expressed as HVT61.The perpendicular distance between a critical point on the image side164 of the sixth lens 160 and the optical axis may be expressed asHVT62. The following conditions are satisfied: HVT61=0 mm and HVT62=0mm.

In the optical image capturing system 10 of the first embodiment, thefollowing condition is satisfied: HVT51/HOI=0.1031. Therefore, thisconfiguration is helpful to correct the aberration of surrounding fieldof view of the optical image capturing system 10.

In the optical image capturing system 10 of the first embodiment, thefollowing condition is satisfied: HVT51/HOS=0.02634. Therefore, thisconfiguration is helpful to correct the aberration of surrounding fieldof view of the optical image capturing system 10.

In the optical image capturing system 10 of the first embodiment, thesecond lens 120, the third lens 130 and the sixth lens 160 have negativerefractive power. The coefficient of dispersion of the second lens 120may be expressed as NA2. The coefficient of dispersion of the third lens130 may be expressed as NA3. The coefficient of dispersion of the sixthlens 160 may be expressed as NA6. The following condition is satisfied:NA6/NA2≤1. Therefore, this configuration is helpful to correct thechromatic aberration of the optical image capturing system 10.

In the optical image capturing system 10 of the first embodiment, TVdistortion and optical distortion for image formation in the opticalimage capturing system 10 may be expressed as TDT and ODT, respectively.The following conditions are satisfied: |TDT|=2.124% and |ODT|=5.076%.

In the first embodiment of the present invention, the rays of any fieldof view can be further divided into sagittal ray and tangential ray. Thespatial frequency of 110 cycles/mm serves as the benchmark forevaluating the focus shifts and the values of MTF. The focus shifts,where the through focus MTF values of the visible sagittal ray at thecentral field of view, 0.3 field of view, and 0.7 field of view of theoptical image capturing system are at their respective maxima, may beexpressed as VSFS0, VSFS3, and VSFS7 (unit of measurement: mm),respectively. The values of VSFS0, VSFS3, and VSFS7 equal to 0.000 mm,−0.005 mm, and 0.005 mm, respectively. The maximum values of the throughfocus MTF of the visible sagittal ray at central field of view, 0.3field of view and 0.7 field of view may be expressed as VSMTF0, VSMTF3,and VSMTF7, respectively. The values of VSMTF0, VSMTF3, and VSMTF7 equalto 0.886, 0.885, and 0.863, respectively. The focus shifts, where thethrough focus MTF values of the visible tangential ray at the centralfield of view, 0.3 field of view, and 0.7 field of view of the opticalimage capturing system are at their respective maxima, may be expressedas VTFS0, VTFS3, and VTFS7 (unit of measurement: mm), respectively. Thevalues of VTFS0, VTFS3, and VTFS7 equal to 0.000 mm, 0.001 mm, and−0.005 mm, respectively. The maximum values of the through focus MTF ofthe visible tangential ray at central field of view, 0.3 field of viewand 0.7 field of view may be expressed as VTMTF0, VTMTF3, and VTMTF7,respectively. The values of VTMTF0, VTMTF3, and VTMTF7 equal to 0.886,0.868, and 0.796, respectively. The average focus shift (position) ofboth the aforementioned focus shifts of the visible sagittal ray atthree fields of view and the focus shifts of the visible tangential rayat three fields of view may be expressed as AVFS (unit of measurement:mm), which meets the absolute value|(VSFS0+VSFS3+VSFS7+VTFS0+VTFS3+VTFS7)/6|=|0.000 mm|.

The focus shifts, where the of the infrared sagittal ray at the centralfield of view, 0.3 field of view, and 0.7 field of view of the opticalimage capturing system are at their respective maxima, may be expressedas ISFS0, ISFS3, and ISFS7 (unit of measurement: mm), respectively. Thevalues of ISFS0, ISFS3, and ISFS7 equal to 0.025 mm, 0.020 mm, and 0.020mm, respectively. The average focus shift (position) of theaforementioned focus shifts of the infrared sagittal ray at three fieldsof view may be expressed as AISFS. The maximum values of the throughfocus MTF of the infrared sagittal ray at central field of view, 0.3field of view, and 0.7 field of view of the optical image capturingsystem may be expressed as ISMTF0, ISMTF3, and ISMTF7, respectively. Thevalues of ISMTF0, ISMTF3, and ISMTF7 equal to 0.787, 0.802, and 0.772,respectively. The focus shifts, where the through focus MTF values ofthe infrared tangential ray at the central field of view, 0.3 field ofview, and 0.7 field of view of the optical image capturing system are attheir respective maxima, may be expressed as ITFS0, ITFS3, and ITFS7(unit of measurement: mm), respectively. The values of ITFS0, ITFS3, andITFS7 equal to 0.025, 0.035, and 0.050, respectively. The average focusshift (position) of the aforementioned focus shifts of the infraredtangential ray at three fields of view may be expressed as AITFS (unitof measurement: mm). The maximum values of the through focus MTF of theinfrared tangential ray at the central field of view, 0.3 field of view,and 0.7 field of view of the optical image capturing system areexpressed as ITMTF0, ITMTF3, and ITMTF7, respectively. The values ofITMTF0, ITMTF3, and ITMTF7 equal to 0.787, 0.805, and 0.721,respectively. The average focus shift (position) of both of theaforementioned focus shifts of the infrared sagittal ray at the threefields of view and focus shifts of the infrared tangential ray at thethree fields of view may be expressed as AIFS (unit of measurement: mm),which is equal to the absolute value of|(ISFS0+ISFS3+ISFS7+ITFS0+ITFS3+ITFS7)/6|=|0.02667 mm|.

The focus shift (difference) between the focal points of the visiblelight and the focal points of the infrared light at their respectivecentral fields of view (RGB/IR) of the entire optical image capturingsystem (i.e. wavelength of 850 nm versus wavelength of 555 nm, unit ofmeasurement: mm) may be expressed as FS, which meets the absolute value|(VSFS0+VTFS0)/2−(ISFS0+ITFS0)/2|=|0.025 mm|. The difference (focusshift) between the average focus shift of the visible light at the threefields of view and the average focus shift of the infrared light at thethree fields of view (RGB/IR) of the entire optical image capturingsystem may be expressed as AFS (i.e. wavelength of 850 nm versuswavelength of 555 nm, unit of measurement: mm), which meets the absolutevalue of |AIFS−AVFS|=|0.02667 mm|.

In the optical image capturing system 10 of the present embodiment, themodulation transfer rates (values of MTF) for the visible light at thespatial frequency of 55 cycles/mm at positions of the optical axis, 0.3HOI and 0.7 HOI on the first image plane are denoted as MTFE0, MTFE3 andMTFE7 respectively. The following conditions are satisfied: MTFE0 isabout 0.84, MTFE3 is about 0.84 and MTFE7 is about 0.75. The modulationtransfer rates (values of MTF) for the visible light at the spatialfrequency of 110 cycles/mm at positions of the optical axis, 0.3 HOI and0.7 HOI on the first image plane 190 are respectively denoted as MTFQ0,MTFQ3 and MTFQ7. The following conditions are satisfied: MTFQ0 is about0.66, MTFQ3 is about 0.65 and MTFQ7 is about 0.51. The modulationtransfer rates (values of MTF) for the visible light at the spatialfrequency of 220 cycles/mm at positions of the optical axis, 0.3 HOI and0.7 HOI on the first image plane 190 are respectively denoted as MTFH0,MTFH3 and MTFH7. The following conditions are satisfied: MTFH0 is about0.17, MTFH3 is about 0.07 and MTFH7 is about 0.14.

In the optical image capturing system 10 of the present embodiment, whenthe operation wavelength 850 nm focuses on the first image plane 190,the modulation transfer rates (MTF values) with the spatial frequency of55 cycles/mm where the images are at the optical axis, 0.3 field of viewand 0.7 field of view are respectively expressed as MTFI0, MTFI3 andMTFI7. The following conditions are satisfied: MTFI0 is about 0.81,MTFI3 is about 0.8 and MTFI7 is about 0.15.

Please refer to the following Table 1 and Table 2.

TABLE 1 Lens Parameters for the First Embodiment f(focal length) = 4.075mm; f/HEP = 1.4; HAF(half angle of view) = 50.000 deg Surface NoCurvature Radius Thickness (mm) Material 0 Object Plane Plane 1 FirstLens −40.99625704 1.934 Plastic 2 4.555209289 5.923 3 Aperture Plane0.495 4 Second Lens 5.333427366 2.486 Plastic 5 −6.781659971 0.502 6Third Lens −5.697794287 0.380 Plastic 7 −8.883957518 0.401 8 Fourth Lens13.19225664 1.236 Plastic 9 21.55681832 0.025 10 Fifth Lens 8.9878063451.072 Plastic 11 −3.158875374 0.025 12 Sixth Lens −29.46491425 1.031Plastic 13 3.593484273 2.412 14 IR-bandstop Plane 0.200 filter 15 Plane1.420 16 First Image Plane Plane Refractive Coefficient of Focal SurfaceNo Index Dispersion Length 0 1 1.515 56.55 −7.828 2 3 4 1.544 55.965.897 5 6 1.642 22.46 −25.738 7 8 1.544 55.96 59.205 9 10 1.515 56.554.668 11 12 1.642 22.46 −4.886 13 14 1.517 64.13 15 16 ReferenceWavelength = 555 nm. Shield Position: the 1st surface with effectiveaperture radius = 5.800 min; the 3rd surface with effective apertureradius = 1.570 mm; the 5th surface with effective aperture radius =1.950 mm

TABLE 2 Aspheric Coefficients of the First Embodiment Table 2: AsphericCoefficients Surface No 1 2 4 5 k 4.310876E+01 −4.707622E+00 2.616025E+00  2.445397E+00 A4 7.054243E−03  1.714312E−02 −8.377541E−03−1.789549E−02 A6 −5.233264E−04  −1.502232E−04 −1.838068E−03−3.657520E−03 A8 3.077890E−05 −1.359611E−04  1.233332E−03 −1.131622E−03A10 −1.260650E−06   2.680747E−05 −2.390895E−03  1.390351E−03 A123.319093E−08 −2.017491E−06  1.998555E−03 −4.152857E−04 A14−5.051600E−10   6.604615E−08 −9.734019E−04  5.487286E−05 A163.380000E−12 −1.301630E−09  2.478373E−04 −2.919339E−06 Surface No 6 7 89 k  5.645686E+00 −2.117147E+01 −5.287220E+00  6.200000E+01 A4−3.379055E−03 −1.370959E−02 −2.937377E−02 −1.359965E−01 A6 −1.225453E−03 6.250200E−03  2.743532E−03  6.628518E−02 A8 −5.979572E−03 −5.854426E−03−2.457574E−03 −2.129167E−02 A10  4.556449E−03  4.049451E−03 1.874319E−03  4.396344E−03 A12 −1.177175E−03 −1.314592E−03−6.013661E−04 −5.542899E−04 A14  1.370522E−04  2.143097E−04 8.792480E−05  3.768879E−05 A16 −5.974015E−06 −1.399894E−05−4.770527E−06 −1.052467E−06 Surface No 10 11 12 13 k −2.114008E+01−7.699904E+00 −6.155476E+01 −3.120467E−01 A4 −1.263831E−01 −1.927804E−02−2.492467E−02 −3.521844E−02 A6  6.965399E−02  2.478376E−03 −1.835360E−03 5.629654E−03 A8 −2.116027E−02  1.438785E−03  3.201343E−03 −5.466925E−04A10  3.819371E−03 −7.013749E−04 −8.990757E−04  2.231154E−05 A12−4.040283E−04  1.253214E−04  1.245343E−04  5.548990E−07 A14 2.280473E−05 −9.943196E−06 −8.788363E−06 −9.396920E−08 A16−5.165452E−07  2.898397E−07  2.494302E−07  2.728360E−09

Table 1 is the detailed structural data for the first embodiment in FIG.1A, in which the unit for the curvature radius, the central thickness,the distance, and the focal length is millimeters (mm). Surfaces 0-16illustrate the surfaces from the object side to the image side in theoptical image capturing system. Table 2 shows the aspheric coefficientsof the first embodiment, where k is the cone coefficient in the asphericsurface equation, and A1-A20 are respectively the first to the twentiethorder aspheric surface coefficients. Furthermore, the tables in thefollowing embodiments correspond to their respective schematic views andthe diagrams of aberration curves, and definitions of the parameters inthese tables are similar to those in the Table 1 and the Table 2, so therepetitive details will not be given here.

Second Embodiment

Please refer to FIGS. 2A to 2E. Wherein, FIG. 2A is a schematic view ofthe optical image capturing system according to the second embodiment ofthe present invention and FIG. 2B shows the longitudinal sphericalaberration curves, astigmatic field curves, and the optical distortioncurve of the optical image capturing system in the order from left toright according to the second embodiment of the present invention. FIG.2C is a characteristic diagram of modulation transfer of visible lightspectrum for the optical image capturing system according to the secondembodiment of the present invention. FIG. 2D is a diagram showing thethrough focus MTF values of the visible light spectrum at the centralfield of view, 0.3 field of view, and 0.7 field of view of the secondembodiment of the present invention. FIG. 2E is a diagram showing thethrough focus MTF values of the infrared light spectrum at the centralfield of view, 0.3 field of view, and 0.7 field of view of the secondembodiment of the present invention. As shown in FIG. 2A, in the orderfrom the object side to the image side, the optical image capturingsystem 20 includes an aperture 200, a first lens 210, a second lens 220,a third lens 230, a fourth lens 240, a fifth lens 250, a sixth lens 260,an IR-bandstop filter 280, a first image plane 290, a second image planeand an image sensing device 292.

The first lens 210 has positive refractive power and is made of plastic.The object side 212 of the first lens 210 is a convex surface and theimage side 214 of the first lens 210 is a convex surface, and the objectside 212 and the image side 214 of the first lens 210 are both aspheric.The object side 212 of the first lens 210 has one inflection point.

The second lens 220 has negative refractive power and is made ofplastic. The object side 222 of the second lens 220 is a convex surfaceand the image side 224 of the second lens 220 is a concave surface, andthe object side 222 and an image side 224 of the second lens 220 areboth aspheric. The object side 222 of the second lens 220 has oneinflection point. The image side 224 of the second lens 220 has twoinflection points.

The third lens 230 has positive refractive power and is made of plastic.The object side 232 of the third lens 230 is a convex surface and theimage side 234 of the third lens 230 is a concave surface, and theobject side 232 and an image side 234 of the third lens 230 are bothaspheric. Both of the object side 232 and the image side 234 of thethird lens 230 have one inflection point.

The fourth lens 240 has negative refractive power and is made ofplastic. The object side 242 of the fourth lens 240 is a concave surfaceand the image side 244 of the fourth lens 240 is a concave surface, andthe object side 242 and an image side 244 of the fourth lens 240 areboth aspheric. The object side 242 of the fourth lens 240 has oneinflection point.

The fifth lens 250 has positive refractive power and is made of plastic.The object side 252 of the fifth lens 250 is a concave surface and theimage side 254 of the fifth lens 250 is a concave surface, and theobject side 252 and an image side 254 of the fifth lens 250 are bothaspheric. Both of the object side 252 and the image side 254 of thefifth lens 250 have one inflection point.

The sixth lens 260 has negative refractive power and is made of plastic.The object side 262 of the sixth lens 260 is a convex surface and theimage side 264 of the sixth lens 260 is a concave surface, and theobject side 262 and an image side 264 of the sixth lens 260 are bothaspheric. The object side 262 of the sixth lens 260 has two inflectionpoints and the image side 264 of the sixth lens 260 has one inflectionpoint. Hereby, this configuration is beneficial to shorten the backfocal length of the optical image capturing system 20 so as to keep itsminiaturization. Furthermore, the incident angle of the off-axis rayscan be reduced effectively, thereby further correcting the off-axisaberration.

The IR-bandstop filter 280 is made of glass and is disposed between thesixth lens 260 and the first image plane 290. The IR-bandstop filter 280does not affect the focal length of the optical image capturing system20.

Please refer to the following Table 3 and Table 4.

TABLE 3 Lens Parameters for the second Embodiment f(focal length) =8.433 mm; f/HEP = 1.8; HAF(half angle of view) = 14.998 deg Surface NoCurvature Radius Thickness (mm) Material 0 Object 1E+18 1E+18 1 Aperture1E+18 −0.510 2 First Lens 4.032372011 1.641 plastic 3 −4.943169512 0.1004 Second Lens 30.08652466 0.250 plastic 5 6.130519049 0.100 6 Third Lens4.614268304 0.453 plastic 7 11.65356399 0.101 8 Fourth Lens 11.610463870.965 plastic 9 1.816830157 1.223 10 Fifth Lens 4.232584591 0.374plastic 11 9.746939812 1.513 12 Sixth Lens 276.7080613 0.928 plastic 1323.25193725 0.103 14 IR-bandstop 1E+18 0.150 BK_7 filter 15 1E+18 0.90016 First Image 1E+18 0.000 Plane Refractive Coefficient of Focal SurfaceNo Index Dispersion Length 0 1 2 1.544 56.064 4.349 3 4 1.544 56.064−14.157 5 6 1.544 56.064 13.683 7 8 1.661 20.381 −3.363 9 10 1.66120.381 10.923 11 12 1.661 20.381 −38.126 13 14 1.517 64.13 15 16Reference Wavelength = 555 nm

TABLE 4 The Aspheric Coefficients of the Second Embodiment Table 4:Aspheric Coefficients Surface No 2 3 4 5 k −9.218654E−01  0.000000E+000.000000E+00 0.000000E+00 A4 −1.063586E−03  1.352583E−02 8.206427E−03−2.077678E−02  A6 −7.044144E−04  −1.696290E−03  5.471545E−031.994433E−02 A8 1.121801E−04 6.924835E−05 −1.538742E−03  −5.883000E−03 A10 −1.437504E−05  −2.634380E−06  1.034751E−04 4.908446E−04 A120.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A14 0.000000E+000.000000E+00 0.000000E+00 0.000000E+00 A16 0.000000E+00 0.000000E+000.000000E+00 0.000000E+00 A18 0.000000E+00 0.000000E+00 0.000000E+000.000000E+00 Surface No 6 7 8 9 k 8.240598E−01 −1.817178E+00 −3.373903E+01  −3.592527E−01  A4 −3.102743E−02  −2.418131E−02 −2.257133E−02  −4.625253E−02  A6 1.971609E−02 1.342379E−02 1.017800E−021.295169E−02 A8 −6.185006E−03  −3.976645E−03  −2.158688E−03 −2.977482E−03  A10 5.757907E−04 4.146242E−04 2.067929E−04 4.257315E−04A12 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A14 0.000000E+000.000000E+00 0.000000E+00 0.000000E+00 A16 0.000000E+00 0.000000E+000.000000E+00 0.000000E+00 A18 0.000000E+00 0.000000E+00 0.000000E+000.000000E+00 Surface No 10 11 12 13 k −9.385287E+00  −1.585015E+01 −8.999857E+01  −6.174122E+01  A4 3.261583E−03 −1.659178E−03 −3.525877E−02  −4.398927E−02  A6 −3.526946E−03  −1.137652E−03 3.228536E−03 4.858702E−03 A8 3.859023E−03 4.641747E−03 5.622077E−04−2.355197E−04  A10 −7.532217E−04  −8.709942E−04  −6.380997E−05 1.957520E−06 A12 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A140.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A16 0.000000E+000.000000E+00 0.000000E+00 0.000000E+00 A18 0.000000E+00 0.000000E+000.000000E+00 0.000000E+00

In the second embodiment, the presentation of the aspheric surfaceequation is similar to that in the first embodiment. Furthermore, thedefinitions of parameters in following tables are similar to those inthe first embodiment, so the repetitive details will not be given here.

The following values for the conditions can be obtained from the data inTable 3 and Table 4.

Second Embodiment ( Primary Reference Wavelength = 555 nm) MTFE0 MTFE3MTFE7 MTFQ0 MTFQ3 MTFQ7 0.88  0.85  0.8  0.7  0.58  0.53  ETP1 ETP2 ETP3ETP4 ETP5 ETP6 1.103 0.327 0.275 1.623 0.283 0.912 ETP1/TP1 ETP2/TP2ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 0.673 1.309 0.607 1.682 0.755 0.982ETL EBL EIN EIR PIR EIN/ETL 8.478 1.341 7.137 0.291 0.103 0.842 SETP/EINEIR/PIR SETP STP SETP/STP BL 0.634 2.831 4.523 4.611 0.981 1.153 ED12ED23 ED34 ED45 ED56 EBL/BL 0.464 0.104 0.102 0.822 1.122  1.1631 SED SINSED/SIN ED12/ED23 ED23/ED34 ED34/ED45 2.614 3.036 0.861 4.479 1.0120.124 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED45/ED56 4.6381.035 1.016 0.672 0.742 0.732 | f/f1 | | f/f2 | | f/f3 | | f/f4 | | f/f5| | f/f6 |  1.93910  0.59570  0.61633  2.50789  0.77206  0.22120 ΣPPRΣNPR ΣPPR/ IN12/f IN56/f TP4/ | ΣNPR | (IN34 + TP4 + IN45)  5.83537 0.81689  7.14336  0.01186  0.17935  0.42162 | f1/f2 | | f2/f3 | (TP1 +IN12)/TP2 (TP6 + IN56)/TP5  0.30720  1.03463 6.96134 6.51841 HOS InTLHOS/HOI InS/HOS ODT % TDT %  8.80013  7.64748  3.82614  0.94210  1.79850 1.99805 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 0    0     0.16037 0.50136  0.21798  0.05697 TP2/TP3 TP3/TP4 InRS61 InRS62 | InRS61 |/TP6| InRS62 |/TP6  0.55207  0.46939  −0.30152  −0.60049  0.32485  0.64695PSTA PLTA NSTA NLTA SSTA SLTA −0.003 mm −0.003 mm −0.005 mm −0.006 mm0.009 mm 0.001 mm VSFS0 VSFS3 VSFS7 VTFS0 VTFS3 VTFS7 −0.005  −0.005 −0.005  −0.005  −0.005  −0.000  VSMTF0 VSMTF3 VSMTF7 VTMTF0 VTMTF3VTMTF7 0.748 0.718 0.666 0.748 0.654 0.529 ISFS0 ISFS3 ISFS7 ITFS0 ITFS3ITFS7 0.005 −0.000  −0.000  0.005 −0.000  −0.000  ISMTF0 ISMTF3 ISMTF7ITMTF0 ITMTF3 ITMTF7 0.781 0.761 0.739 0.781 0.756 0.612 FS AIFS AVFSAFS 0.010 0.002 −0.004  0.006 IN12 IN23 IN34 IN45 IN56 TP1  0.100 mm 0.100 mm  0.101 mm  1.223 mm 1.513 mm 1.641 mm

The following values about the length of the outline curve can beobtained from the data in Table 3 and Table 4.

Values Related to Inflection Point of Second Embodiment (PrimaryReference Wavelength = 555 nm) HIF111 1.9142 HIF111/ 0.8323 SGI1110.4182 |SGI111|/ 0.2031 HOI (|SGI111| + TP1) HIF211 1.9430 HIF211/0.8448 SGI211 0.2409 |SGI211|/ 0.4907 HOI (|SGI211| + TP2) HIF221 1.5160HIF221/ 0.6591 SGI221 0.1901 |SGI221|/ 0.4319 HOI (|SGI221| + TP2)HIF222 2.2090 HIF222/ 0.9604 SGI222 0.2569 |SGI222|/ 0.5068 HOI(|SGI222| + TP2) HIF311 1.3874 HIF311/ 0.6032 SGI311 0.1739 |SGI311|/0.2775 HOI (|SGI311| + TP3) HIF312 2.0798 HIF312/ 0.9042 SGI312 0.2445|SGI312|/ 0.3506 HOI (|SGI312| + TP3) HIF321 1.1839 HIF321/ 0.5147SGI321 0.0364 |SGI321|/ 0.0743 HOI (|SGI321| + TP3) HIF322 1.8502HIF322/ 0.8044 SGI322 0.0501 |SGI322|/ 0.0996 HOI (|SGI322| + TP3)HIF411 0.7021 HIF411/ 0.3053 SGI411 0.0162 |SGI411|/ 0.0166 HOI(|SGI411| + TP4) HIF412 1.0669 HIF412/ 0.4639 SGI412 0.0286 |SGI412|/0.0288 HOI (|SGI412| + TP4) HIF511 1.6568 HIF511/ 0.7203 SGI511 0.3115|SGI511|/ 0.4542 HOI (|SGI511| + TP5) HIF521 1.7822 HIF521/ 0.7749SGI521 0.2842 |SGI521|/ 0.4315 HOI (|SGI521| + TP5) HIF611 0.0924HIF611/ 0.0402 SGI611 0.0000 |SGI611|/ 0.0000 HOI (|SGI611| + TP6)HIF612 1.7388 HIF612/ 0.7560 SGI612 −0.1967 |SGI612|/ 0.1749 HOI(|SGI612| + TP6) HIF621 0.2868 HIF621/ 0.1247 SGI621 0.0015 |SGI621|/0.0016 HOI (|SGI621| + TP6)

Third Embodiment

Please refer to FIGS. 3A to 3E. FIG. 3A is a schematic view of theoptical image capturing system according to the third embodiment of thepresent invention. FIG. 3B shows the longitudinal spherical aberrationcurves, astigmatic field curves, and optical distortion curve of theoptical image capturing system, in the order from left to right,according to the third embodiment of the present invention. FIG. 3C is acharacteristic diagram of modulation transfer of visible light spectrumfor the optical image capturing system according to the third embodimentof the present invention. FIG. 3D is a diagram showing the through focusMTF values of the visible light spectrum at the central field of view,0.3 field of view, and 0.7 field of view of the third embodiment of thepresent invention. FIG. 3E is a diagram showing the through focus MTFvalues of the infrared light spectrum at the central field of view, 0.3field of view, and 0.7 field of view of the third embodiment of thepresent invention. As shown in FIG. 3A, in the order from the objectside to the image side, the optical image capturing system 30 includesan aperture 300, a first lens 310, a second lens 320, a third lens 330,a fourth lens 340, a fifth lens 350, a sixth lens 360, an IR-bandstopfilter 380, a first image plane 390, a second image plane and an imagesensing device 392.

The first lens 310 has positive refractive power and is made of plastic.The object side 312 of the first lens 310 is a convex surface and theimage side 314 of the first lens 310 is a convex surface, and the objectside 312 and the image side 314 of the first lens 310 are both aspheric.The object side 312 of the first lens 310 has one inflection point.

The second lens 320 has positive refractive power and is made ofplastic. The object side 322 of the second lens 320 is a convex surfaceand the image side 324 of the second lens 320 is a concave surface, andthe object side 322 and the image side 324 of the second lens 320 areboth aspheric. The image side 324 of the second lens 320 has threeinflection points.

The third lens 330 has negative refractive power and is made of plastic.The object side 332 of the third lens 330 is a convex surface and theimage side 334 of the third lens 330 is a concave surface, and theobject side 332 and the image side 334 of the third lens 330 are bothaspheric. Both of the object side 332 and the image side 334 of thethird lens 330 have three inflection points.

The fourth lens 340 has negative refractive power and is made ofplastic. The object side 342 of the fourth lens 340 is a concave surfaceand the image side 344 of the fourth lens 340 is a concave surface, andthe object side 342 and the image side 344 of the fourth lens 340 areboth aspheric. The object side 342 of the fourth lens 340 has oneinflection point.

The fifth lens 350 has positive refractive power and is made of plastic.The object side 352 of the fifth lens 350 is a convex surface and theimage side 354 of the fifth lens 350 is a concave surface, and theobject side 352 and an image side 354 of the fifth lens 350 are bothaspheric. Both of the object side 352 and the image side 354 of thefifth lens 350 have one inflection point.

The sixth lens 360 has negative refractive power and is made of plastic.The object side 362 of the sixth lens 360 is a convex surface and theimage side 364 of the sixth lens 360 is a concave surface, and theobject side 362 and the image side 364 of the sixth lens 360 are bothaspheric. Both of the object side 362 and the image side 364 of thesixth lens 360 have two inflection points. Hereby, this configuration isbeneficial to shorten the back focal length of the optical imagecapturing system 30 so as to keep its miniaturization. Furthermore, theincident angle of the off-axis rays can be reduced effectively, therebyfurther correcting the off-axis aberration.

The IR-bandstop filter 380 is made of glass and is disposed between thesixth lens 360 and the first image plane 390, without affecting thefocal length of the optical image capturing system 30.

Please refer to the following Table 5 and Table 6.

TABLE 5 Lens Parameter for the Third Embodiment f(focal length) = 6.194mm; f/HEP = 1.8; HAF(angle of view) = 19.998 deg Surface No. CurvatureRadius Thickness (mm) Material 0 Object 1E+18 1E+18 1 Aperture 1E+18−0.185 2 First Lens 3.489279107 0.979 Plastic 3 −5.192754639 0.100 4Second Lens 15.31598001 0.458 Plastic 5 338.1211332 0.115 6 Third Lens97.88569069 0.278 Plastic 7 17.00354531 0.105 8 Fourth lens −37.076853670.642 Plastic 9 2.413001571 0.592 10 Fifth Lens 1.780997631 0.456Plastic 11 2.320721233 1.230 12 Sixth Lens 5.669819343 0.662 Plastic 134.353910753 0.134 14 IR-bandstop 1E+18 0.150 Filter 15 1E+18 0.900 BK_716 First Image 1E+18 0.000 Plane Surface No. Refractive IndexCoefficient of Dispersion Focal Length 0 1 2 1.544 56.064 3.982 3 41.544 56.064 29.374 5 6 1.515 56.524 −39.907 7 8 1.661 20.381 −3.376 910 1.661 20.381 8.582 11 12 1.661 20.381 −35.225 13 14 15 1.517 64.13 16Reference Wavelength = 555 nm. Shield Position: the 5th surface witheffective aperture radius = 1.680 mm, the 13th surface with effectiveaperture radius = 2.020 mm

TABLE 6 The Aspheric Coefficients of the Third Embodiment Table 6:Aspheric Coefficients Surface No. 2 3 4 5 k −3.716989E+00 0.000000E+000.000000E+00 0.000000E+00 A4 −4.454170E−03 −1.194519E−02 −2.029977E−03−9.658090E−02 A6 −5.842689E−03 3.586089E−03 1.254927E−02 1.394468E−01 A87.431128E−04 −1.838788E−03 −8.443153E−03 −1.173873E−01 A10 −8.559934E−045.610645E−04 2.679531E−03 6.194715E−02 A12 3.691830E−04 −8.553736E−051.939558E−04 −1.647183E−02 A14 −5.058423E−05 3.923236E−07 −1.523931E−041.631743E−03 A16 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A180.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 Surface No. 6 7 8 9k 0.000000E+00 0.000000E+00 0.000000E+00 4.030971E−01 A4 −2.383577E−01−2.201616E−01 −6.681552E−02 −8.109607E−02 A6 3.255148E−01 2.767975E−011.101097E−01 1.173137E−01 A8 −2.338299E−01 −1.787389E−01 −8.492206E−02−1.161379E−01 A10 1.104950E−01 7.088794E−02 3.908424E−02 7.326798E−02A12 −2.914672E−02 −1.675101E−02 −9.876992E−03 −2.443947E−02 A143.071573E−03 1.740979E−03 1.055662E−03 3.654401E−03 A16 0.000000E+000.000000E+00 0.000000E+00 0.000000E+00 A18 0.000000E+00 0.000000E+000.000000E+00 0.000000E+00 Surface No. 10 11 12 13 k −4.513458E+00−1.088150E+01 −4.634243E+01 −2.228197E+01 A4 −2.875849E−02 7.770381E−03−7.742246E−02 −7.955188E−02 A6 2.037730E−02 −1.617408E−02 7.879425E−031.427465E−02 A8 −8.462383E−03 2.282690E−02 −4.210610E−03 −6.620988E−03A10 −9.137372E−04 −1.530474E−02 2.253192E−03 2.568072E−03 A121.483481E−03 5.366155E−03 −1.549355E−04 −5.015400E−04 A14 −3.391173E−04−7.632658E−04 −2.347052E−05 4.104507E−05 A16 0.000000E+00 0.000000E+000.000000E+00 0.000000E+00 A18 0.000000E+00 0.000000E+00 0.000000E+000.000000E+00In the third embodiment, the presentation of the aspheric surfaceequation is similar to that in the first embodiment. Furthermore, thedefinitions of parameters in following tables are similar to those inthe first embodiment, so the repetitive details will not be given here.

The following values for the conditional expressions can be obtainedfrom the data in Table 5 and Table 6.

Third Embodiment (Primary Reference Wavelength = 555 nm) MTFE0 MTFE3MTFE7 MTFQ0 MTFQ3 MTFQ7 0.93 0.87 0.86 0.8 0.69 0.67 ETP1 ETP2 ETP3 ETP4ETP5 ETP6 0.589 0.355 0.269 1.061 0.405 0.706 ETP1/TP1 ETP2/TP2 ETP3/TP3ETP4/TP4 ETP5/TP5 ETP6/TP6 0.602 0.775 0.967 1.653 0.889 1.066 ETL EBLEIN EIR PIR EIN/ETL 6.613 1.239 5.373 0.189 0.134 0.813 SETP/EIN EIR/PIRSETP STP SETP/STP BL 0.630 1.413 3.385 3.475 0.974 1.184 ED12 ED23 ED34ED45 ED56 EBL/BL 0.385 0.098 0.127 0.513 0.865 1.0465 ED12/ ED23/ SEDSIN SED/SIN ED23 ED34 ED34/ED45 1.988 2.141 0.929 3.916 0.774 0.248ED12/ ED23/ ED34/ ED45/ ED56/ ED45/ IN12 IN23 IN34 IN45 IN56 ED56 3.8510.855 1.216 0.867 0.703 0.593 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6|1.55552 0.21085 0.15520 1.83477 0.72167 0.17583 ΣPPR/ TP4/(IN34 + ΣPPRΣNPR |ΣNPR| IN12/f IN56/f TP4 + IN45) 4.26715 0.38668 11.03534 0.016150.19853 0.47956 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP6 + IN56)/TP50.13555 0.73608 2.35616 4.14648 HOS InTL HOS/HOI InS/HOS ODT % TDT %6.80000 5.61607 2.95652 0.97285 1.80053 2.00641 HVT62/ HVT51 HVT52 HVT61HVT62 HOI HVT62/HOS 0 0 0.68388 0.79275 0.34467 0.11658 |InRS61|/|InRS62|/ TP2/TP3 TP3/TP4 InRS61 InRS62 TP6 TP6 1.64954 0.43254 −0.31153−0.54843 0.47045 0.82821 PSTA PLTA NSTA NLTA SSTA SLTA −0.008 −0.008−0.002 −0.003 0.007 −0.0004 mm mm mm mm mm mm VSFS0 VSFS3 VSFS7 VTFS0VTFS3 VTFS7 −0.003 −0.005 −0.003 −0.003 −0.003 −0.003 VSMTF0 VSMTF3VSMTF7 VTMTF0 VTMTF3 VTMTF7 0.813 0.768 0.755 0.813 0.703 0.690 ISFS0ISFS3 ISFS7 ITFS0 ITFS3 ITFS7 0.008 0.005 0.003 0.008 0.005 0.008 ISMTF0ISMTF3 ISMTF7 ITMTF0 ITMTF3 ITMTF7 0.766 0.745 0.753 0.766 0.721 0.720FS AIFS AVFS AFS 0.010 0.006 −0.003 0.009 IN12 IN23 IN34 IN45 IN56 TP10.100 mm 0.115 mm 0.105 mm 0.592 mm 1.230 mm 0.979 mm

The following values for the conditional expressions can be obtainedfrom the data in Table 5 and Table 6.

Values Related to Inflection Point of Third Embodiment (PrimaryReference Wavelength = 555 nm) HIF111 0.9858 HIF111/ 0.4286 SGI1110.1230 |SGI111|/ 0.1117 HOI (|SGI111| + TP1) HIF221 0.0508 HIF221/0.0221 SGI221 0.0000 |SGI221|/ 0.0000 HOI (|SGI221| + TP2) HIF222 0.8447HIF222/ 0.3673 SGI222 −0.0185 |SGI222|/ 0.0387 HOI (|SGI222| + TP2)HIF223 1.4759 HIF223/ 0.6417 SGI223 0.0014 |SGI223|/ 0.0031 HOI(|SGI223| + TP2) HIF311 0.0602 HIF311/ 0.0262 SGI311 0.0000 |SGI311|/0.0001 HOI (|SGI311| + TP3) HIF312 0.7764 HIF312/ 0.3376 SGI312 −0.0356|SGI312|/ 0.1137 HOI (|SGI312| + TP3) HIF313 1.4508 HIF313/ 0.6308SGI313 −0.0068 |SGI313|/ 0.0238 HOI (|SGI313| + TP3) HIF321 0.1550HIF321/ 0.0674 SGI321 0.0006 |SGI321|/ 0.0021 HOI (|SGI321| + TP3)HIF322 0.7997 HIF322/ 0.3477 SGI322 −0.0222 |SGI322|/ 0.0741 HOI(|SGI322| + TP3) HIF323 1.2786 HIF323/ 0.5559 SGI323 −0.0453 |SGI323|/0.1402 HOI (|SGI323| + TP3) HIF411 0.7382 HIF411/ 0.3210 SGI411 −0.0152|SGI411|/ 0.0232 HOI (|SGI411| + TP4) HIF511 1.0324 HIF511/ 0.4489SGI511 0.2231 |SGI511|/ 0.3284 HOI (|SGI511| + TP5) HIF521 1.4823HIF521/ 0.6445 SGI521 0.3212 |SGI521|/ 0.4132 HOI (|SGI521| + TP5)HIF611 0.3844 HIF611/ 0.1671 SGI611 0.0107 |SGI611|/ 0.0160 HOI(|SGI611| + TP6) HIF612 1.5183 HIF612/ 0.6601 SGI612 −0.1857 |SGI612|/0.2190 HOI (|SGI612| + TP6) HIF621 0.4399 HIF621/ 0.1913 SGI621 0.0182|SGI621|/ 0.0268 HOI (|SGI621| + TP6) HIF622 1.9096 HIF622/ 0.8303SGI622 −0.4507 |SGI622|/ 0.4050 HOI (|SGI622| + TP6)

Fourth Embodiment

Please refer to FIGS. 4A to 4E. FIG. 4A is a schematic view of theoptical image capturing system according to the fourth embodiment of thepresent invention. FIG. 4B shows the longitudinal spherical aberrationcurves, astigmatic field curves, and optical distortion curve of theoptical image capturing system, in the order from left to right,according to the fourth embodiment of the present invention. FIG. 4C isa characteristic diagram of modulation transfer of visible lightspectrum for the optical image capturing system according to the fourthembodiment of the present invention. FIG. 4D is a diagram showing thethrough focus MTF values of the visible light spectrum at central fieldof view, 0.3 field of view and 0.7 field of view of the fourthembodiment of the present invention. FIG. 4E is a diagram showing thethrough focus MTF values of the infrared light spectrum at central fieldof view, 0.3 field of view, and 0.7 field of view of the fourthembodiment of the present invention. As shown in FIG. 4A, in the orderfrom the object side to the image side, the optical image capturingsystem 40 includes an aperture 400, a first lens 410, a second lens 420,a third lens 430, a fourth lens 440, a fifth lens 450, a sixth lens 460,an IR-bandstop filter 480, a first image plane 490, a second image planeand an image sensing device 492.

The first lens 410 has positive refractive power and is made of plastic.The object side 412 of the first lens 410 is a convex surface and theimage side 414 of the first lens 410 is a concave surface, and theobject side 412 and the image side 414 of the first lens 410 are bothaspheric. Both of the object side 412 and the image side 414 of thefirst lens 410 have one inflection point.

The second lens 420 has negative refractive power and is made ofplastic. The object side 422 of the second lens 420 is a convex surfaceand the image side 424 of the second lens 420 is a concave surface, andthe object side 422 and the image side 424 of the second lens 420 areboth aspheric. The object side 422 of the second lens 420 has twoinflection points and the image side 424 of the second lens 420 has oneinflection point.

The third lens 430 has positive refractive power and is made of plastic.The object side 432 of the third lens 430 is a convex surface and theimage side 434 of the third lens 430 is a concave surface, and theobject side 432 and the image side 434 of the third lens 430 are bothaspheric. The object side 432 of the third lens 430 has one inflectionpoint and the image side 434 of the third lens 430 has two inflectionpoints.

The fourth lens 440 has positive refractive power and is made ofplastic. The object side 442 of the fourth lens 440 is a convex surfaceand the image side 444 of the fourth lens 440 is a concave surface, andthe object side 442 and an image side 444 of the fourth lens 440 areboth aspheric. Both of the object side 442 and the image side 444 of thefourth lens 440 have two inflection points.

The fifth lens 450 has negative refractive power and is made of plastic.The object side 452 of the fifth lens 450 is a convex surface and theimage side 454 of the fifth lens 450 is a concave surface, and theobject side 452 and the image side 454 of the fifth lens 450 are bothaspheric. Both of the object side 452 and the image side 454 of thefifth lens 450 have two inflection points.

The sixth lens 460 has negative refractive power and is made of plastic.The object side 462 of the sixth lens 460 is a convex surface and theimage side 464 of the sixth lens 460 is a concave surface, and theobject side 462 and an image side 464 of the sixth lens 460 are bothaspheric. The object side 462 of the sixth lens 460 has two inflectionpoints and the image side 464 of the sixth lens 460 has one inflectionpoint. Hereby, this configuration is beneficial to shorten the backfocal length of the optical image capturing system 40 so as to keep itsminiaturization. Furthermore, the incident angle of the off-axis rayscan be reduced effectively, thereby further correcting the off-axisaberration.

The IR-bandstop filter 480 is made of glass and is disposed between thesixth lens 460 and the first image plane 490. The IR-bandstop filter 480does not affect the focal length of the optical image capturing system40.

Please refer to the following Table 7 and Table 8.

TABLE 7 Lens Parameter for the Fourth Embodiment f(focal length) = 4.884mm; f/HEP = 1.8; HAF(half angle of view) = 24.999 deg Surface No.Curvature Radius Thickness (mm) Material 0 Object 1E+18 1E+18 1 Aperture1E+18 −0.279 2 First Lens 2.062087597 0.865 Plastic 3 9.186949324 0.1004 Second Lens 8.230446054 0.302 Plastic 5 2.603359904 0.025 6 Third Lens2.355440368 0.683 Plastic 7 4.568806174 0.192 8 Fourth Lens 2.0676437020.217 Plastic 9 2.178676045 0.778 10 Fifth Lens 3.182907753 0.380Plastic 11 2.214182781 0.240 12 Sixth Lens 1.275604691 0.296 Plastic 131.129525592 0.173 14 IR-bandstop 1E+18 0.150 BK_7 filter 15 1E+18 0.90016 First Image 1E+18 0.000 Plane 17 1E+18 0.000 Surface No. RefractiveIndex Coefficient of Dispersion Focal Length 0 1 2 1.544 56.064 4.671 34 1.661 20.381 −5.836 5 6 1.544 56.064 8.032 7 8 1.661 20.381 34.169 910 1.661 20.381 −12.944 11 12 1.584 29.878 −67.300 13 14 1.517 64.13 1516 17 Reference Wavelength = 555 nm. Shield Position: the 5th surfacewith effective aperture radius = 1.325 mm

TABLE 8 The Aspheric Coefficients of the Fourth Embodiment Table 8:Aspheric Coefficients Surface No 2 3 4 5 k 7.413537E−02 0.000000E+000.000000E+00 0.000000E+00 A4 −1.797319E−02 −9.567838E−02 −9.282102E−02−2.475707E−02 A6 −8.690843E−03 −2.479305E−02 1.970869E−03 −2.642168E−01A8 −6.606034E−03 4.847714E−02 6.763270E−02 4.377122E−01 A10 4.148682E−03−2.640329E−02 −4.611394E−02 −2.974970E−01 A12 −5.530741E−03 6.159111E−031.572882E−02 1.029698E−01 A14 1.521254E−03 −5.162238E−04 −2.326936E−03−1.553836E−02 A16 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00A18 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 Surface No 6 7 89 k 0.000000E+00 0.000000E+00 0.000000E+00 −3.198656E−01 A4 3.853287E−02−1.597222E−02 −2.055553E−01 −1.980855E−01 A6 −3.411064E−01 1.033979E−012.036110E−01 2.089457E−01 A8 4.579678E−01 −2.740442E−01 −3.547183E−01−3.391414E−01 A10 −2.749097E−01 3.000858E−01 2.949496E−01 3.181002E−01A12 8.636776E−02 −1.660643E−01 −1.301839E−01 −1.563625E−01 A14−1.234335E−02 3.573900E−02 2.661908E−02 3.867622E−02 A16 0.000000E+000.000000E+00 0.000000E+00 0.000000E+00 A18 0.000000E+00 0.000000E+000.000000E+00 0.000000E+00 Surface No 10 11 12 13 k −9.000000E+01−9.000000E+01 −1.824418E+01 −1.017398E+01 A4 4.715121E−02 −1.044003E−01−5.944437E−01 −3.841528E−01 A6 −1.486595E−01 1.623612E−02 2.462464E−012.712741E−01 A8 1.529204E−02 −5.774613E−02 1.307477E−01 −9.038848E−02A10 1.035769E−01 6.452466E−02 −1.503027E−01 1.310271E−02 A12−1.218664E−01 −3.833023E−02 4.899705E−02 −4.490315E−04 A14 3.770895E−028.519964E−03 −5.463331E−03 −3.926480E−05 A16 0.000000E+00 0.000000E+000.000000E+00 0.000000E+00 A18 0.000000E+00 0.000000E+00 0.000000E+000.000000E+00

In the fourth embodiment, the form of the aspheric surface equation issimilar to that in the first embodiment. Furthermore, the definitions ofparameters in following tables are similar to those in the firstembodiment, so the repetitive details will not be given here.

The following values for the conditional expressions can be obtainedfrom the data in Table 7 and Table 8.

Fourth Embodiment (Primary Reference Wavelength = 555 nm) MTFE0 MTFE3MTFE7 MTFQ0 MTFQ3 MTFQ7 0.92 0.9 0.83 0.8 0.75 0.56 ETP1 ETP2 ETP3 ETP4ETP5 ETP6 0.478 0.493 0.515 0.334 0.377 0.560 ETP1/TP1 ETP2/TP2 ETP3/TP3ETP4/TP4 ETP5/TP5 ETP6/TP6 0.553 1.633 0.755 1.539 0.991 1.889 ETL EBLEIN EIR PIR EIN/ETL 5.010 1.228 3.783 0.178 0.173 0.755 SETP/EIN EIR/PIRSETP STP SETP/STP BL 0.729 1.024 2.757 2.742 1.005 1.223 ED12 ED23 ED34ED45 ED56 EBL/BL 0.212 0.081 0.147 0.479 0.108 1.0041 ED12/ ED23/ SEDSIN SED/SIN ED23 ED34 ED34/ED45 1.026 1.334 0.769 2.613 0.552 0.307ED12/ ED23/ ED34/ ED45/ ED56/ IN12 IN23 IN34 IN45 IN56 ED45/ED56 2.1163.239 0.766 0.615 0.449 4.446 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6|1.04557 0.83685 0.60800 0.14293 0.37729 0.07257 ΣPPR/ TP4/(IN34 + ΣPPRΣNPR |ΣNPR| IN12/f IN56/f TP4 + IN45) 2.17379 0.90941 2.39033 0.020480.04911 0.18268 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP6 + IN56)/TP50.80037 0.72654 3.19467 1.40916 HOS InTL HOS/HOI InS/HOS ODT % TDT %5.30019 4.07671 2.30443 0.94739 1.03297 0.73544 HVT62/ HVT51 HVT52 HVT61HVT62 HOI HVT62/HOS 0.763457 0.61761 0.46254 0.67777 0.29468 0.12788|InRS61|/ |InRS62|/ TP2/TP3 TP3/TP4 InRS61 InRS62 TP6 TP6 0.442303.15038 −0.49023 −0.27411 1.65469 0.92521 PSTA PLTA NSTA NLTA SSTA SLTA−0.029 −0.001 0.011 mm 0.005 mm −0.005 0.002 mm mm mm mm VSFS0 VSFS3VSFS7 VTFS0 VTFS3 VTFS7 −0.005 −0.005 −0.000 −0.005 −0.000 −0.005 VSMTF0VSMTF3 VSMTF7 VTMTF0 VTMTF3 VTMTF7 0.806 0.782 0.633 0.806 0.748 0.562ISFS0 ISFS3 ISFS7 ITFS0 ITFS3 ITFS7 0.005 0.005 0.005 0.005 0.010 −0.000ISMTF0 ISMTF3 ISMTF7 ITMTF0 ITMTF3 ITMTF7 0.774 0.768 0.699 0.774 0.7380.544 FS AIFS AVFS AFS 0.010 0.005 −0.003 0.008 IN12 IN23 IN34 IN45 IN56TP1 0.100 mm 0.025 mm 0.192 mm 0.778 mm 0.240 mm 0.865 mm

The following values for the conditional expressions can be obtainedfrom the data in Table 7 and Table 8.

Values Related to Inflection Point of fourth Embodiment (PrimaryReference Wavelength = 555 nm) HIF111 0.9487 HIF111/ 0.4125 SGI1110.2073 |SGI111|/ 0.1934 HOI (|SGI111| + TP1) HIF121 0.3020 HIF121/0.1313 SGI121 0.0042 |SGI121|/ 0.0048 HOI (|SGI121| + TP1) HIF211 0.3385HIF211/ 0.1472 SGI211 0.0058 |SGI211|/ 0.0187 HOI (|SGI211| + TP2)HIF212 0.8527 HIF212/ 0.3707 SGI212 0.0076 |SGI212|/ 0.0245 HOI(|SGI212| + TP2) HIF221 1.2556 HIF221/ 0.5459 SGI221 0.2375 |SGI221|/0.4403 HOI (|SGI221| + TP2) HIF311 1.2650 HIF311/ 0.5500 SGI311 0.3064|SGI311|/ 0.3098 HOI (|SGI311| + TP3) HIF321 0.7853 HIF321/ 0.3415SGI321 0.0654 |SGI321|/ 0.0874 HOI (|SGI321| + TP3) HIF322 1.2396HIF322/ 0.5390 SGI322 0.0886 |SGI322|/ 0.1149 HOI (|SGI322| + TP3)HIF411 0.5422 HIF411/ 0.2357 SGI411 0.0577 |SGI411|/ 0.2102 HOI(|SGI411| + TP4) HIF412 1.1533 HIF412/ 0.5014 SGI412 0.0598 |SGI412|/0.2164 HOI (|SGI412| + TP4) HIF421 0.5586 HIF421/ 0.2429 SGI421 0.0571|SGI421|/ 0.2085 HOI (|SGI421| + TP4) HIF422 0.9496 HIF422/ 0.4128SGI422 0.1063 |SGI422|/ 0.3292 HOI (|SGI422| + TP4) HIF511 0.4647HIF511/ 0.2020 SGI511 0.0259 |SGI511|/ 0.0637 HOI (|SGI511| + TP5)HIF512 1.2603 HIF512/ 0.5480 SGI512 −0.2249 |SGI512|/ 0.3716 HOI(|SGI512| + TP5) HIF521 0.2963 HIF521/ 0.1288 SGI521 0.0144 |SGI521|/0.0365 HOI (|SGI521| + TP5) HIF522 1.3702 HIF522/ 0.5957 SGI522 −0.3285|SGI522|/ 0.4633 HOI (|SGI522| + TP5) HIF611 0.2397 HIF611/ 0.1042SGI611 0.0179 |SGI611|/ 0.0571 HOI (|SGI611| + TP6) HIF612 1.2775HIF612/ 0.5554 SGI612 −0.3258 |SGI612|/ 0.5237 HOI (|SGI612| + TP6)HIF621 0.3186 HIF621/ 0.1385 SGI621 0.0351 |SGI621|/ 0.1060 HOI(|SGI621| + TP6)

Fifth Embodiment

Please refer to FIGS. 5A to 5E. FIG. 5A is a schematic view of theoptical image capturing system according to the fifth embodiment of thepresent invention. FIG. 5B shows the longitudinal spherical aberrationcurves, astigmatic field curves, and optical distortion curve of theoptical image capturing system, in the order from left to right,according to the fifth embodiment of the present invention. FIG. 5C is acharacteristic diagram of modulation transfer of visible light spectrumfor the optical image capturing system according to the fifth embodimentof the present invention. FIG. 5D is a diagram showing the through focusMTF values of the visible light spectrum at the central field of view,0.3 field of view and 0.7 field of view of the fifth embodiment of thepresent invention. FIG. 5E is a diagram showing the through focus MTFvalues of the infrared light spectrum at the central field of view, 0.3field of view, and 0.7 field of view of the fifth embodiment of thepresent invention. As shown in FIG. 5A, in the order from an object sideto an image side, the optical image capturing system 50 includes anaperture 500, a first lens 510, a second lens 520, a third lens 530, afourth lens 540, a fifth lens 550, a sixth lens 560, an IR-bandstopfilter 580, a first image plane 590, a second image plane and an imagesensing device 592.

The first lens 510 has positive refractive power and is made of plastic.The object side 512 of the first lens 510 is a convex surface and theimage side 514 of the first lens 510 is a concave surface, and theobject side 512 and the image side 514 of the first lens 510 are bothaspheric. Both of the object side 512 and the image side 514 of thefirst lens 510 have one inflection point.

The second lens 520 has negative refractive power and is made ofplastic. The object side 522 of the second lens 520 is a concave surfaceand the image side 524 of the second lens 520 is a concave surface, andthe object side 522 and the image side 524 of the second lens 520 areboth aspherical. The object side 522 of the second lens 520 has twoinflection points and the image side 524 of the second lens 520 has oneinflection point.

The third lens 530 has positive refractive power and is made of plastic.The object side 532 of the third lens 530 is a convex surface and theimage side 534 of the third lens 530 is a concave surface, and objectside 532 and image side 534 of the third lens 530 are both aspheric. Theobject side 532 of the third lens 520 has three inflection points andthe image side 534 of the third lens 530 has one inflection point.

The fourth lens 540 has positive refractive power and is made ofplastic. The object side 542 of the fourth lens 540 is a convex surfaceand the image side 544 of the fourth lens 540 is a concave surface, andthe object side 542 and the image side 544 of the fourth lens 540 areboth aspheric. The object side 542 of the fourth lens 540 has twoinflection points.

The fifth lens 550 has positive refractive power and is made of plastic.The object side 552 of the fifth lens 550 is a concave surface and theimage side 554 of the fifth lens 550 is a convex surface, and the objectside 552 and the image side 554 of the fifth lens 550 are both aspheric.Both of the object side 552 and the image side 554 of the fifth lens 520have two inflection points.

The sixth lens 560 has negative refractive power and is made of plastic.The object side 562 of the sixth lens 560 is a convex surface and theimage side 564 of the sixth lens 560 is a concave surface, and theobject side 562 and the image side 564 of the sixth lens 560 are bothaspheric. The object side 562 of the sixth lens 560 has two inflectionpoints and the image side 564 of the sixth lens 560 has one inflectionpoint. Hereby, this configuration is beneficial to shorten the backfocal length of the optical image capturing system 50 so as to keep itsminiaturization. Furthermore, the incident angle of the off-axis rayscan be reduced effectively, thereby further correcting the off-axisaberration.

The IR-bandstop filter 580 is made of glass and is disposed between thesixth lens 560 and the first image plane 590 without affecting the focallength of the optical image capturing system 50.

Please refer to the following Table 9 and Table 10.

TABLE 9 Lens Parameters for the Fifth Embodiment f (focal length) =3.945 mm; f/HEP = 1.8; HAF (half angle of view) = 29.998 deg Surface NoCurvature Radius Thickness (mm) Material 0 Object 1E+18 1E+18 1 Aperture1E+18 −0.183 2 First Lens 1.794307448 0.626 Plastic 3 4.072726413 0.1224 Second Lens −13.28031254 0.279 Plastic 5 4.300805546 0.025 6 ThirdLens 1.215076469 0.450 Plastic 7 1.633603324 0.117 8 Fourth Lens1.438330937 0.243 Plastic 9 1.458837184 0.424 10 Fifth Lens −15.81231870.385 Plastic 11 −1.980290824 0.580 12 Sixth Lens 1.55408062 0.220Plastic 13 0.87836456 0.229 14 IR-bandstop 1E+18 0.150 BK_7 filter 151E+18 0.750 16 First Image 1E+18 0.000 Plane Surface No Refractive IndexCoefficient of Dispersion Focal Length 0 1 2 1.544 56.064 5.356 3 41.661 20.381 −4.841 5 6 1.544 56.064 6.298 7 8 1.661 20.381 26.765 9 101.544 56.064 4.107 11 12 1.544 56.064 −4.182 13 14 1.517 64.13 15 16Reference Wavelength = 555 nm. Shield Position: the 5th surface witheffective aperture radius = 1.215 mm

TABLE 10 The Aspheric Coefficients of the Fifth Embodiment Table 10:Aspheric Coefficients Surface No 2 3 4 5 k −2.400817E+00 −4.406925E+018.082884E+01 2.097228E+00 A4 1.059445E−02 −1.335446E−01 5.501723E−03−5.334185E−02 A6 −8.402979E−03 −3.318564E−02 8.243612E−02 3.102621E−01A8 −5.256680E−02 8.412227E−02 −1.128467E−01 −5.652294E−01 A107.762597E−02 −2.930324E−02 1.633256E−01 7.249933E−01 A12 −9.663436E−02−4.085559E−02 −1.471497E−01 −5.890636E−01 A14 5.436508E−02 3.700978E−027.088251E−02 2.579988E−01 A16 −1.193905E−02 −9.308693E−03 −1.406165E−02−4.749070E−02 A18 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00Surface No 6 7 8 9 k −2.715143E+00 −9.452467E+00 −4.468885E+00−9.992848E−01 A4 −5.557526E−02 2.101992E−01 −1.080205E−01 −2.084650E−01A6 1.611186E−01 −2.783982E−01 −9.125675E−03 3.187349E−02 A8−4.594076E−01 2.164431E−01 2.942424E−01 2.302399E−01 A10 5.625422E−01−3.906471E−01 −7.419768E−01 −5.850625E−01 A12 −3.558140E−01 5.474500E−019.930551E−01 8.167290E−01 A14 1.304120E−01 −3.682914E−01 −6.670823E−01−5.605289E−01 A16 −2.471138E−02 9.036380E−02 1.685856E−01 1.472521E−01A18 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 Surface No 10 1112 13 k −5.311973E−01 −1.187963E+01 −2.093857E+01 −7.541768E+00 A4−4.169730E−03 −2.170443E−01 −5.664977E−01 −3.356369E−01 A6 1.956485E−015.725999E−01 6.538563E−01 3.374153E−01 A8 −4.415559E−01 −8.388943E−01−4.827147E−01 −2.352939E−01 A10 7.181851E−01 9.852067E−01 2.219101E−011.045740E−01 A12 −7.197329E−01 −6.898393E−01 −5.809013E−02 −2.907449E−02A14 3.833028E−01 2.401740E−01 7.734682E−03 4.586948E−03 A16−8.791475E−02 −3.252716E−02 −3.919131E−04 −3.087442E−04 A18 0.000000E+000.000000E+00 0.000000E+00 0.000000E+00

In the fifth embodiment, the form of the aspheric surface equation issimilar to that in the first embodiment. Furthermore, the definitions ofparameters in following tables are similar to those in the firstembodiment, so the repetitive details will not be given here.

The following values for the conditional expressions can be obtainedfrom the data in Table 9 and Table 10:

Fifth Embodiment (Primary Reference Wavelength = 555 nm) MTFE0 MTFE3MTFE7 MTFQ0 MTFQ3 MTFQ7 0.9 0.86 0.84 0.78 0.67 0.62 ETP1 ETP2 ETP3 ETP4ETP5 ETP6 0.306 0.456 0.350 0.297 0.226 0.438 ETP1/TP1 ETP2/TP2 ETP3/TP3ETP4/TP4 ETP5/TP5 ETP6/TP6 0.489 1.636 0.778 1.223 0.587 1.988 ETL EBLEIN EIR PIR EIN/ETL 4.361 1.015 3.346 0.115 0.229 0.767 SETP/EIN EIR/PIRSETP STP SETP/STP BL 0.619 0.499 2.073 2.202 0.941 1.129 ED12 ED23 ED34ED45 ED56 EBL/BL 0.225 0.157 0.082 0.185 0.624 0.8990 ED12/ ED23/ SEDSIN SED/SIN ED23 ED34 ED34/ED45 1.274 1.269 1.004 1.436 1.904 0.446ED12/ ED23/ ED34/ ED45/ ED56/ IN12 IN23 IN34 IN45 IN56 ED45/ED56 1.8446.276 0.703 0.435 1.076 0.296 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6|0.73646 0.81478 0.62629 0.14738 0.96051 0.94324 ΣPPR/ TP4/(IN34 + ΣPPRΣNPR |ΣNPR| IN12/f IN56/f TP4 + IN45) 1.84435 2.38431 0.77354 0.030980.14706 0.30949 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP6 + IN56)/TP51.10635 0.76866 2.68117 2.08027 HOS InTL HOS/HOI InS/HOS ODT % TDT %4.60015 3.47068 2.00007 0.96014 1.02130 0.16599 HVT62/ HVT51 HVT52 HVT61HVT62 HOI HVT62/HOS 0 0 0.49573 0.88852 0.38631 0.19315 |InRS61/|InRS62|/ TP2/TP3 TP3/TP4 InRS61 InRS62 |/TP6 TP6 0.62027 1.85358−0.29898 −0.24886 1.35778 1.13016 PSTA PLTA NSTA NLTA SSTA SLTA −0.014−0.007 0.001 −0.005 −0.002 0.003 mm mm mm mm mm mm VSFS0 VSFS3 VSFS7VTFS0 VTFS3 VTFS7 −0.000 −0.005 −0.000 −0.000 −0.005 −0.000 VSMTF0VSMTF3 VSMTF7 VTMTF0 VTMTF3 VTMTF7 0.780 0.776 0.629 0.780 0.722 0.619ISFS0 ISFS3 ISFS7 ITFS0 ITFS3 ITFS7 0.010 0.005 −0.000 0.010 0.005−0.000 ISMTF0 ISMTF3 ISMTF7 ITMTF0 ITMTF3 ITMTF7 0.750 0.756 0.653 0.7500.725 0.608 FS AIFS AVFS AFS 0.010 0.005 −0.002 0.007 IN12 IN23 IN34IN45 IN56 TP1 0.122 mm 0.025 mm 0.117 mm 0.424 mm 0.580 mm 0.626 mm

The following values for the conditional expressions can be obtainedfrom the data in Table 9 and Table 10.

Values Related to Inflection Point of Fifth Embodiment (PrimaryReference Wavelength = 555 nm) HIF111 0.7859 HIF111/ 0.3417 SGI1110.1595 |SGI111|/ 0.2031 HOI (|SGI111| + TP1) HIF121 0.3218 HIF121/0.1399 SGI121 0.0105 |SGI121|/ 0.0165 HOI (|SGI121| + TP1) HIF211 0.4614HIF211/ 0.2006 SGI211 −0.0074 |SGI211|/ 0.0257 HOI (|SGI211| + TP2)HIF212 1.2280 HIF212/ 0.5339 SGI212 0.0625 |SGI212|/ 0.1829 HOI(|SGI212| + TP2) HIF221 1.0511 HIF221/ 0.4570 SGI221 0.1813 |SGI221|/0.3938 HOI (|SGI221| + TP2) HIF311 0.7814 HIF311/ 0.3398 SGI311 0.2029|SGI311|/ 0.3108 HOI (|SGI311| + TP3) HIF312 0.8749 HIF312/ 0.3804SGI312 0.2407 |SGI312|/ 0.3486 HOI (|SGI312| + TP3) HIF313 1.0642HIF313/ 0.4627 SGI313 0.3187 |SGI313|/ 0.4147 HOI (|SGI313| + TP3)HIF321 0.7130 HIF321/ 0.3100 SGI321 0.1445 |SGI321|/ 0.2432 HOI(|SGI321| + TP3) HIF411 0.6513 HIF411/ 0.2832 SGI411 0.1113 |SGI411|/0.3145 HOI (|SGI411| + TP4) HIF412 1.1612 HIF412/ 0.5049 SGI412 0.1854|SGI412|/ 0.4331 HOI (|SGI412| + TP4) HIF511 0.3797 HIF511/ 0.1651SGI511 −0.0042 |SGI511|/ 0.0108 HOI (|SGI511| + TP5) HIF512 0.9361HIF512/ 0.4070 SGI512 0.0071 |SGI512|/ 0.0181 HOI (|SGI512| + TP5)HIF521 0.6194 HIF521/ 0.2693 SGI521 −0.0910 |SGI521|/ 0.1913 HOI(|SGI521| + TP5) HIF522 1.1104 HIF522/ 0.4828 SGI522 −0.1457 |SGI522|/0.2748 HOI (|SGI522| + TP5) HIF611 0.2473 HIF611/ 0.1075 SGI611 0.0157|SGI611|/ 0.0666 HOI (|SGI611| + TP6) HIF612 1.2186 HIF612/ 0.5298SGI612 −0.1561 |SGI612|/ 0.4149 HOI (|SGI612| + TP6) HIF621 0.3588HIF621/ 0.1560 SGI621 0.0550 |SGI621|/ 0.1999 HOI (|SGI621| + TP6)

Sixth Embodiment

Please refer to FIGS. 6A to 6E. FIG. 6A is a schematic view of theoptical image capturing system according to the sixth embodiment of thepresent invention. FIG. 6B shows the longitudinal spherical aberrationcurves, astigmatic field curves, and optical distortion curve of theoptical image capturing system, in the order from left to right,according to the sixth embodiment of the present invention. FIG. 6C is acharacteristic diagram of modulation transfer of visible light spectrumfor the optical image capturing system according to the sixth embodimentof the present invention. FIG. 6D is a diagram showing the through focusMTF values of the visible light spectrum at central field of view, 0.3field of view, and 0.7 field of view of the sixth embodiment of thepresent invention. FIG. 6E is a diagram showing the through focus MTFvalues of the infrared light spectrum at central field of view, 0.3field of view, and 0.7 field of view of the sixth embodiment of thepresent invention. As shown in FIG. 6A, in the order from an object sideto an image side, the optical image capturing system 60 includes anaperture 600, a first lens 610, a second lens 620, a third lens 630, afourth lens 640, a fifth lens 650, a sixth lens 660, an IR-bandstopfilter 680, a first image plane 690, a second image plane and an imagesensing device 692.

The first lens 610 has positive refractive power and is made of plastic.The object side 612 of the first lens 610 is a convex surface and theimage side 614 of the first lens 610 is a convex surface, and the objectside 612 and the image side 614 of the first lens 610 are both aspheric.The object side 612 of the first lens 610 has one inflection point.

The second lens 620 has positive refractive power and is made ofplastic. The object side 622 of the second lens 620 is a concave surfaceand the image side 624 of the second lens 620 is a convex surface, andthe object side 622 and the image side 624 of the second lens 620 areboth aspheric. The object side 622 of the second lens 620 has oneinflection point and the image side 624 of the second lens 620 has twoinflection points.

The third lens 630 has negative refractive power and is made of plastic.The object side 632 of the third lens 630 is a convex surface and theimage side 634 of the third lens 630 is a concave surface, and theobject side 632 and the image side 634 of the third lens 630 are bothaspheric. The object side 632 of the third lens 630 has two inflectionpoints.

The fourth lens 640 has negative refractive power and is made ofplastic. The object side 642 of the fourth lens 640 is a convex surfaceand the image side 644 of the fourth lens 640 is a concave surface, andthe object side 642 and the image side 644 of the fourth lens 640 areboth aspheric. Both of the object side 642 and the image side 644 of thefourth lens 640 have two inflection points.

The fifth lens 650 has positive refractive power and is made of plastic.The object side 652 of the fifth lens 650 is a concave surface and theimage side 654 of the fifth lens 650 is a convex surface, and the objectside 652 and the image side 654 of the fifth lens 650 are both aspheric.Both of the object side 652 and the image side 654 of the fifth lens 650have two inflection points.

The sixth lens 660 has negative refractive power and is made of plastic.The object side 662 of the sixth lens 660 is a convex surface and theimage side 664 of the sixth lens 660 is a concave surface, and theobject side 662 and the image side 664 of the sixth lens 660 areaspheric. The object side 662 of the sixth lens 660 has two inflectionpoints and the image side 664 of the sixth lens 660 has one inflectionpoint. Hereby, this configuration is beneficial to shorten the backfocal length of the optical image capturing system so as to keep itsminiaturization. Furthermore, the incident angle of the off-axis rayscan be reduced effectively, thereby further correcting the off-axisaberration.

The IR-bandstop filter 680 is made of glass and is disposed between thesixth lens 660 and the first image plane 690, without affecting thefocal length of the optical image capturing system 60.

Please refer to the following Table 11 and Table 12.

TABLE 11 Lens Parameters for the Sixth Embodiment f (focal length) =3.259 mm; f/HEP = 2.8; HAF (half angle of view) = 34.995 deg Surface NoCurvature Radius Thickness (mm) Material 0 Object 1E+18 1E+18 1 Aperture1E+18 −0.034 2 First Lens 2.33340894 0.420 Plastic 3 −2.442923647 0.1004 Second Lens −2.551265888 0.262 Plastic 5 −2.518044653 0.025 6 ThirdLens 4.12751668 0.281 Plastic 7 1.551550186 0.310 8 Fourth Lens−33.26759273 0.220 Plastic 9 4.574652791 0.152 10 Fifth Lens−9.648845416 0.303 Plastic 11 −1.547313915 0.111 12 Sixth Lens1.831977862 0.632 Plastic 13 0.991532392 0.284 14 IR-bandstop 1E+180.150 BK_7 filter 15 1E+18 0.750 16 First Image 1E+18 0.000 PlaneSurface No Refractive Index Coefficient of Dispersion Focal Length 0 1 21.544 56.064 2.256 3 4 1.544 56.064 93.503 5 6 1.661 20.381 −3.899 7 81.661 20.381 −6.017 9 10 1.584 29.878 3.094 11 12 1.544 56.064 −5.392 1314 1.517 64.13 15 16 Reference Wavelength: 555 nm

TABLE 12 The Aspheric Coefficients of the Sixth Embodiment Table 12:Aspheric Coefficients Surface No 2 3 4 5 k −2.488173E+00 −7.390055E+01−9.000000E+01 −8.999799E+01 A4 −1.962203E−01 −1.111807E+00 −9.046433E−01−9.714797E−01 A6 −1.530912E−01 4.234868E+00 5.756202E+00 6.904298E+00 A8−1.740203E+00 −1.701441E+01 −1.742666E+01 −2.440798E+01 A10 8.174918E+005.253937E+01 3.718911E+01 5.354621E+01 A12 −2.693658E+01 −1.131683E+02−5.617550E+01 −7.614167E+01 A14 4.761614E+01 1.416843E+02 5.323864E+016.509418E+01 A16 −3.549130E+01 −7.639429E+01 −2.314811E+01 −2.519374E+01A18 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 Surface No 6 7 89 k −8.244903E+01 −1.674888E+01 −9.000000E+01 −6.765856E+01 A4−2.861944E−01 4.347277E−01 −5.316535E−01 −5.505770E−01 A6 9.891824E−01−2.262169E+00 1.512182E+00 8.584775E−02 A8 −2.132742E+00 8.152567E+00−3.854223E+00 8.010068E−01 A10 −2.520618E+00 −1.936325E+01 1.124987E+01−3.456791E−01 A12 1.621849E+01 2.766690E+01 −1.969452E+01 4.191651E−01A14 −2.109778E+01 −2.105459E+01 1.718829E+01 −9.856484E−01 A168.944542E+00 6.595217E+00 −5.997049E+00 4.763460E−01 A18 0.000000E+000.000000E+00 0.000000E+00 0.000000E+00 Surface No 10 11 12 13 k−8.987857E+01 −1.140641E+01 −1.677673E+00 −6.189549E+00 A4 8.091406E−013.851836E−01 −4.257327E−01 −1.613246E−01 A6 −2.672546E+00 3.850875E−022.541568E−01 8.426052E−02 A8 5.178412E+00 −8.796014E−01 2.985709E−02−3.192093E−02 A10 −6.715373E+00 1.031794E+00 −1.572542E−01 3.320292E−03A12 5.289732E+00 −5.752418E−01 9.557755E−02 2.435797E−03 A14−2.215245E+00 1.732503E−01 −2.234026E−02 −1.026126E−03 A16 3.733982E−01−2.371705E−02 1.601580E−03 1.215181E−04 A18 0.000000E+00 0.000000E+000.000000E+00 0.000000E+00

In the sixth embodiment, the form of the aspheric surface equation issimilar to that in the first embodiment. Furthermore, the definitions ofparameters in following tables are similar to those in the firstembodiment, so the repetitive details will not be given here.

The following values for the conditional expressions can be obtainedfrom the data in Table 11 and Table 12:

Sixth Embodiment (Primary Reference Wavelength = 555 nm) MTFE0 MTFE3MTFE7 MTFQ0 MTFQ3 MTFQ7 0.89 0.88 0.85 0.78 0.76 0.65 ETP1 ETP2 ETP3ETP4 ETP5 ETP6 0.279 0.256 0.361 0.230 0.238 0.693 ETP1/TP1 ETP2/TP2ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 0.665 0.975 1.286 1.043 0.785 1.096ETL EBL EIN EIR PIR EIN/ETL 3.966 1.072 2.895 0.172 0.284 0.730 SETP/EINEIR/PIR SETP STP SETP/STP BL 0.710 0.604 2.057 2.118 0.971 1.184 ED12ED23 ED34 ED45 ED56 EBL/BL 0.162 0.089 0.187 0.190 0.210 0.9054 ED12/ED23/ SED SIN SED/SIN ED23 ED34 ED34/ED45 0.838 0.698 1.201 1.818 0.4770.984 ED12/ ED23/ ED34/ ED45/ ED56/ IN12 IN23 IN34 IN45 IN56 ED45/ED561.622 3.568 0.603 1.251 1.889 0.903 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5||f/f6| 1.44445 0.03486 0.83599 0.54164 1.05326 0.60448 ΣPPR/ TP4/(IN34 +ΣPPR ΣNPR |ΣNPR| IN12/f IN56/f TP4 + IN45) 3.03935 1.47533 2.060120.03068 0.03417 0.32270 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP6 +IN56)/TP5 0.02413 23.98409 1.98073 2.45698 HOS InTL HOS/HOI InS/HOS ODT% TDT % 4.00005 2.81621 1.73915 0.99161 1.00108 0.19832 HVT62/ HVT51HVT52 HVT61 HVT62 HOI HVT62/HOS 0 0 0.72443 1.08141 0.47018 0.27035|InRS61| |InRS62| TP2/TP3 TP3/TP4 InRS61 InRS62 TP6 TP6 0.93324 1.27785−0.05164 −0.05003 0.08167 0.07913 PSTA PLTA NSTA NLTA SSTA SLTA 0.0002−0.003 0.006 mm −0.002 0.0003 0.0004 mm mm mm mm mm VSFS0 VSFS3 VSFS7VTFS0 VTFS3 VTFS7 −0.000 −0.005 −0.000 −0.000 −0.000 −0.005 VSMTF0VSMTF3 VSMTF7 VTMTF0 VTMTF3 VTMTF7 0.776 0.772 0.739 0.776 0.756 0.665ISFS0 ISFS3 ISFS7 ITFS0 ITFS3 ITFS7 0.005 −0.000 0.005 0.005 0.005 0.010ISMTF0 ISMTF3 ISMTF7 ITMTF0 ITMTF3 ITMTF7 0.670 0.658 0.622 0.670 0.6350.535 FS AIFS AVFS AFS 0.005 0.005 −0.002 0.007 IN12 IN23 IN34 IN45 IN56TP1 0.100 mm 0.025 mm 0.310 mm 0.152 mm 0.111 mm 0.420 mm

The following values for the conditional expressions can be obtainedfrom the data in Table 11 and Table 12:

Values Related to Inflection Point of sixth Embodiment (PrimaryReference Wavelength = 555 nm) HIF111 0.3403 HIF111/ 0.1480 SGI1110.0216 |SGI111|/ 0.0489 HOI (|SGI111| + TP1) HIF211 0.3600 HIF211/0.1565 SGI211 −0.0255 |SGI211|/ 0.0886 HOI (|SGI211| + TP2) HIF2210.3768 HIF221/ 0.1638 SGI221 −0.0279 |SGI221|/ 0.0960 HOI (|SGI221| +TP2) HIF222 0.7265 HIF222/ 0.3159 SGI222 −0.0652 |SGI222|/ 0.1991 HOI(|SGI222| + TP2) HIF311 0.2827 HIF311/ 0.1229 SGI311 0.0075 |SGI311|/0.0259 HOI (|SGI311| + TP3) HIF312 0.6750 HIF312/ 0.2935 SGI312 0.0081|SGI312|/ 0.0281 HOI (|SGI312| + TP3) HIF411 0.5155 HIF411/ 0.2241SGI411 −0.0229 |SGI411|/ 0.0944 HOI (|SGI411| + TP4) HIF412 0.8157HIF412/ 0.3546 SGI412 −0.0350 |SGI412|/ 0.1374 HOI (|SGI412| + TP4)HIF421 0.1716 HIF421/ 0.0746 SGI421 0.0027 |SGI421|/ 0.0120 HOI(|SGI421| + TP4) HIF422 0.6393 HIF422/ 0.2780 SGI422 −0.0318 |SGI422|/0.1262 HOI (|SGI422| + TP4) HIF511 0.1075 HIF511/ 0.0467 SGI511 −0.0005|SGI511|/ 0.0016 HOI (|SGI511| + TP5) HIF512 0.5411 HIF512/ 0.2353SGI512 0.0146 |SGI512|/ 0.0460 HOI (|SGI512| + TP5) HIF521 0.2997HIF521/ 0.1303 SGI521 −0.0236 |SGI521|/ 0.0722 HOI (|SGI521| + TP5)HIF522 0.7533 HIF522/ 0.3275 SGI522 −0.0438 |SGI522|/ 0.1263 HOI(|SGI522| + TP5) HIF611 0.3563 HIF611/ 0.1549 SGI611 0.0281 |SGI611|/0.0425 HOI (|SGI611| + TP6) HIF612 1.2378 HIF612/ 0.5382 SGI612 −0.0162|SGI612|/ 0.0250 HOI (|SGI612| + TP6) HIF621 0.4670 HIF621/ 0.2030SGI621 0.0823 |SGI621|/ 0.1152 HOI (|SGI621| + TP6)

Although the present invention is disclosed by the aforementionedembodiments, those embodiments do not serve to limit the scope of thepresent invention. A person skilled in the art could perform variousalterations and modifications to the present invention, withoutdeparting from the spirit and the scope of the present invention. Hence,the scope of the present invention should be defined by the followingappended claims.

Despite the fact that the present invention is specifically presentedand illustrated with reference to the exemplary embodiments thereof, itshould be apparent to a person skilled in the art that, variousmodifications could be performed to the forms and details of the presentinvention, without departing from the scope and spirit of the presentinvention defined in the claims and their equivalence.

What is claimed is:
 1. An optical image capturing system, from an objectside to an image side, comprising: a first lens with refractive power; asecond lens with refractive power; a third lens with refractive power; afourth lens with refractive power; a fifth lens with refractive power; asixth lens with refractive power; wherein the first lens to the sixthlens are configured to form a first image plane, which is an image planespecifically for visible light with a wavelength of 555 nm andperpendicular to an optical axis, and a through focus modulationtransfer rate (MTF) of central field of view of the first image planehaving a maximum value at a first spatial frequency; wherein the firstlens to the sixth lens are configured to form a second image plane,which is an image plane specifically for infrared light with a wavelength of 850 nm and perpendicular to the optical axis, and a throughfocus modulation transfer rate (MTF) of central field of view of thesecond image plane having a maximum value at the first spatialfrequency; wherein the optical image capturing system has six lenseswith refractive power, and the optical image capturing system has amaximum image height HOI on the first image plane, at least one lensamong the first lens to the sixth lens has positive refractive power,focal lengths of the six lenses are respectively expressed as f1, f2,f3, f4, f5 and f6, a focal length of the optical image capturing systemis expressed as f, an entrance pupil diameter of the optical imagecapturing system is expressed as HEP, a distance on the optical axisfrom an object side of the first lens to the first image plane isexpressed as HOS, a distance on the optical axis from the object side ofthe first lens to an image side of the sixth lens is expressed as InTL,a half maximum angle of view of the optical image capturing system isexpressed as HAF, a distance on the optical axis between the first imageplane and the second image plane is expressed as FS, thicknesses of thefirst lens to the sixth lens at height of ½ HEP parallel to the opticalaxis are respectively expressed as ETP1, ETP2, ETP3, ETP4, ETP5 andETP6, a sum of ETP1 to ETP6 described above is expressed as SETP,thicknesses of the first lens to the sixth lens on the optical axis arerespectively expressed as TP1, TP2, TP3, TP4, TP5 and TP6, a sum of TP1to TP6 described above is expressed as STP, and the following conditionsare satisfied: 1.0≤f/HEP≤10.0; 0 deg<HAF≤35 deg; 0.2≤SETP/STP<1 and|FS|≤15 μm; wherein a sequence of refraction powers from the first lensto the sixth lens is +−+−+−, ++−−+−, +−++−− or +−+++−; wherein adistance on the optical axis between the second lens and the third lensis expressed as IN23, a distance on the optical axis between the thirdlens and the fourth lens is expressed as IN34, a distance on the opticalaxis between the fourth lens and the fifth lens is expressed as IN45,and the following conditions are satisfied: IN45>IN23 and IN45>IN34. 2.The optical image capturing system of claim 1, wherein a wavelength ofthe infrared light is from 700 nm to 1300 nm, and the first spatialfrequency is expressed as SP1, and the following condition is satisfied:SP1≤440 cycles/mm.
 3. The optical image capturing system of claim 1,wherein a distance on the optical axis between the second lens and thethird lens is expressed as IN23, a distance on the optical axis betweenthe third lens and the fourth lens is expressed as IN34, a distance onthe optical axis between the fourth lens and the sixth lens is expressedas IN56, the following conditions are satisfied: IN56>IN23 andIN56>IN34.
 4. The optical image capturing system of claim 1, wherein thefollowing condition is satisfied: HOS/f≤1.5.
 5. The optical imagecapturing system of claim 1, wherein a horizontal distance parallel tothe optical axis from a first coordinate point on the object side of thefirst lens at height of ½ HEP to the first image plane is expressed asETL, a horizontal distance parallel to the optical axis from the firstcoordinate point on the object side of the first lens at height of ½ HEPto a second coordinate point on the image side of the sixth lens atheight of ½ HEP is expressed as EIN, and the following condition issatisfied: 0.2≤EIN/ETL<1.
 6. The optical image capturing system of claim1, wherein thicknesses of the first lens to the sixth lens at height of½ HEP parallel to the optical axis are respectively expressed as ETP1,ETP2, ETP3, ETP4, ETP5 and ETP6, a sum of ETP1 to ETP5 described aboveis expressed as SETP, and the following condition is satisfied:0.2≤SETP/EIN<1.
 7. The optical image capturing system of claim 1,wherein a horizontal distance parallel to the optical axis from a secondcoordinate point on the image side of the sixth lens at height of ½ HEPto the first image plane is expressed as EBL, a horizontal distanceparallel to the optical axis from an intersection point where the imageside of the sixth lens crosses the optical axis to the first image planeis expressed as BL, and the following condition is satisfied:0.1≤EBL/BL≤1.1.
 8. The optical image capturing system of claim 1,further comprising an aperture, wherein a distance on the optical axisfrom the aperture to the first image plane is expressed as InS, and thefollowing condition is satisfied: 0.2≤InS/HOS≤1.1.
 9. An optical imagecapturing system, from an object side to an image side, comprising: afirst lens with refractive power; a second lens with refractive power; athird lens with refractive power; a fourth lens with refractive power;with a concave surface of image side thereof on the optical axis; afifth lens with refractive power; a sixth lens with refractive power;wherein the first lens to the sixth lens are configured to form a firstimage plane, which is an image plane specifically for visible light witha wavelength of 555 nm and perpendicular to an optical axis, and athrough focus modulation transfer rate (MTF) of central field of view ofthe first image plane having a maximum value at a first spatialfrequency with a value of 110 cycles/mm; wherein the first lens to thesixth lens are configured to form a second image plane, which is animage plane specifically for infrared light with a wavelength of 850 nmand perpendicular to the optical axis, and the through focus modulationtransfer rate (MTF) of central field of view of the second image planehaving a maximum value at the first spatial frequency with a value of110 cycles/mm; wherein the optical image capturing system has six lenseswith refractive power, the optical image capturing system has a maximumimage height HOI on the first image plane, at least one lens among thefirst lens to the sixth lens has positive refractive power, focallengths of the six lenses are respectively expressed as f1, f2, f3, f4,f5 and f6, and a focal length of the optical image capturing system isexpressed as f, an entrance pupil diameter of the optical imagecapturing system is expressed as HEP, a distance on the optical axisfrom an object side of the first lens to the first image plane isexpressed as HOS, a distance on the optical axis from the object side ofthe first lens to an image side of the sixth lens is expressed as InTL,a half maximum angle of view of the optical image capturing system isexpressed as HAF, a distance on the optical axis between the first imageplane and the second image plane is expressed as FS, a horizontaldistance parallel to the optical axis from a first coordinate point onthe object side of the first lens at height of ½ HEP to the first imageplane is expressed as ETL, a horizontal distance parallel to the opticalaxis from the first coordinate point on the object side of the firstlens at height of ½ HEP to a second coordinate point on the image sideof the sixth lens at height of ½ HEP is expressed as EIN and thefollowing conditions are satisfied: 1≤f/HEP≤10; 0 deg<HAF≤35 deg;0.2≤EIN/ETL<1 and |FS|≤15 μm; wherein a sequence of refraction powersfrom the first lens to the sixth lens is +−+−+−, ++−−+−, +−++−− or+−+++−; wherein thicknesses of the first lens through the sixth lens onthe optical axis are respectively expressed as TP1, TP2, TP3, TP4, TP5,and TP6, and the following condition is satisfied: TP1 is more than anyone of TP2, TP3, TP4, TP5 and TP6.
 10. The optical image capturingsystem of claim 9, wherein modulation transfer rates (MTF value) ofvisible light at spatial frequency of 110 cycles/mm at positions of theoptical axis, 0.3 HOI and 0.7 HOI on the first image plane arerespectively expressed as MTFQ0, MTFQ3 and MTFQ7, and the followingconditions are satisfied: MTFQ0≥0.2; MTFQ3≥0.01 and MTFQ7≥0.01.
 11. Theoptical image capturing system of claim 9, wherein an image side of thesecond lens on the optical axis is a concave surface.
 12. The opticalimage capturing system of claim 9, wherein at least one lens among thefirst lens to the sixth lens is made of plastic.
 13. The optical imagecapturing system of claim 9, wherein the following condition issatisfied: HOS/HOI≤3.92.
 14. The optical image capturing system of claim9, wherein at least one lens among the first lens, the second lens, thethird lens, the fourth lens, the fifth lens and the sixth lens is alight filter element filtering light which is less than 500 nm.
 15. Theoptical image capturing system of claim 9, wherein the followingcondition is satisfied: InTL/HOS≤0.87.
 16. The optical image capturingsystem of claim 9, wherein at least one lens among the first lens, thesecond lens, the third lens, the fourth lens, the fifth lens and thesixth lens is a light filter element filtering light which is less than500 nm.
 17. The optical image capturing system of claim 9, wherein atleast one surface of at least three lenses among the first lens throughthe sixth lens has respectively at least one inflection point.
 18. Anoptical image capturing system, from an object side to an image side,comprising: a first lens with refractive power; a second lens withrefractive power; a third lens with refractive power; a fourth lens withrefractive power; a fifth lens with refractive power; a sixth lens withrefractive power; wherein the first lens to the sixth lens areconfigured to form a first average image plane, which is an image planespecifically for visible light with a wavelength of 555 nm andperpendicular to an optical axis, and the first average image plane isdisposed at the average position of the defocusing positions, wherethrough focus modulation transfer rates (values of MTF) of visible lightat central field of view, 0.3 field of view, and 0.7 field of view ofthe optical image capturing system are respectively at correspondingmaximum value at a first spatial frequency, the first spatial frequencybeing 110 cycles/mm; wherein the first lens to the sixth lens areconfigured to form a second average image plane, which is an image planespecifically for infrared light with a wavelength of 850 nm andperpendicular to the optical axis, and the second average image plane isdisposed at the average position of the defocusing positions, wherethrough focus modulation transfer rates (values of MTF) of infraredlight at central field of view, 0.3 field of view, and 0.7 field of viewof the optical image capturing system are respectively at correspondingrespective maximum at a first spatial frequency, the first spatialfrequency being 110 cycles/mm; wherein the optical image capturingsystem has six lenses with refractive power, the optical image capturingsystem has a maximum image height HOI on the first average image plane,focal lengths of the six lenses are respectively expressed as f1, f2,f3, f4, f5 and f6, a focal length of the optical image capturing systemis expressed as f, an entrance pupil diameter of the optical imagecapturing system is expressed as HEP, a half maximum angle of view ofthe optical image capturing system is expressed as HAF, a distance onthe optical axis from an object side of the first lens to the firstaverage image plane is expressed as HOS, a distance on the optical axisfrom the object side of the first lens to an image side of the sixthlens is expressed as InTL, a distance on the optical axis between thesecond lens and the third lens is expressed as IN23, a distance on theoptical axis between the third lens and the fourth lens is expressed asIN34, a distance on the optical axis between the fourth lens and thesixth lens is expressed as IN56, a distance on the optical axis betweenthe first average image plane and the second average image plane isexpressed as AFS, thicknesses of the first lens to the sixth lens atheight of ½ HEP parallel to the optical axis are respectively expressedas ETP1, ETP2, ETP3, ETP4, ETP5 and ETP6, a sum of ETP1 to ETP6described above is expressed as SETP, thicknesses of the first lens tothe sixth lens on the optical axis are respectively expressed as TP1,TP2, TP3, TP4, TP5 and TP6, a sum of TP1 to TP6 described above isexpressed as STP, and the following conditions are satisfied:1.0≤f/HEP≤10.0; 0 deg<HAF≤35 deg; 0.2≤SETP/STP<1; |AFS|≤15 μm; IN56>IN23and IN56>IN34; wherein a sequence of refraction powers from the firstlens to the sixth lens is +−+−+−, ++−−+−, +−++−− or +−+++−; wherein adistance on the optical axis between the second lens and the third lensis expressed as IN23, a distance on the optical axis between the thirdlens and the fourth lens is expressed as IN34, a distance on the opticalaxis between the fourth lens and the fifth lens is expressed as IN45,the following conditions are satisfied: IN45>IN23 and IN45>IN34.
 19. Theoptical image capturing system of claim 18, wherein the followingcondition is satisfied: HOS/f≤1.5.
 20. The optical image capturingsystem of claim 18, wherein an image side of the fourth lens on theoptical axis is a concave surface and an image side of the second lenson the optical axis is a concave surface.
 21. The optical imagecapturing system of claim 18, wherein the following condition issatisfied: HOS/HOI≤4.
 22. The optical image capturing system of claim18, further comprising an aperture and an image sensing device, whereinthe image sensing device is disposed on the first average image planeand is disposed with at least 100 thousand pixels, a distance on theoptical axis from the aperture to the first average image plane isexpressed as InS, and the following conditions are satisfied:0.2≤InS/HOS≤1.1 and InTL/HOS≤0.87.